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Heavyweight Showdown #nn
	no publisher listed, March 29, 1966	Canada

Muhammad Ali (Cassius Clay Jr.)		Maple Leaf Gardens, Toronto, Ontario,
vs. George Chuvalo		Canada

Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
1. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 25, 2023																	1
2. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 08, 2023																	1
3. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 15, 2023																	1
4. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 22, 2023																	1
5. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 29, 2023																	1
6. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 05, 2023																	1
7. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 12, 2023																	1
8. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 19, 2023																	1
9. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 03, 2023																	1
10. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 10, 2023																	1
11. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 17, 2023																	1
12. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 24, 2023																	1
13. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 31, 2023																	1
14. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 14, 2023																	1
15. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 21, 2023																	1
16. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 28, 2023																	1
17. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 05, 2023																	1
18. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 12, 2023																	1
19. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 19, 2023																	1
Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
20. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 26, 2023																	1
21. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 31, 2023																	1
22. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 09, 2024																	1
23. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 16, 2024																	1
24. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 23, 2024																	1
25. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 30, 2024																	1
26. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 06, 2024																	1
27. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 20, 2024																	1
28. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 27, 2024																	1
29. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	March 05, 2024																	1
30. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 02, 2024																	1
31. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 09, 2024																	1
32. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 16, 2024																	1
33. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 23, 2024																	1
34. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 30, 2024																	1
35. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	May 07, 2024																	1
36. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	May 14, 2024																	1
37. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	May 21, 2024																	1
38. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	May 28, 2024																	1
39. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	June 04, 2024																	1
Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
40. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	June 11, 2024																	1
41. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	June 18, 2024																	1
42. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	June 25, 2024																	1
43. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 02, 2024																	1
44. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 09, 2024																	1
45. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 16, 2024																	1
46. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 23, 2024																	1
47. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 30, 2024																	1
48. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 06, 2024																	1
49. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 13, 2024																	1
50. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 20, 2024																	1
51. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 27, 2024																	1
52. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 03, 2024																	1
53. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 10, 2024																	1
54. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 17, 2024																	1
55. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 24, 2024																	1
56. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 01, 2024																	1
57. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 08, 2024																	1
58. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 15, 2024																	1
59. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 22, 2024																	1
Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
60. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 05, 2024																	1
61. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 12, 2024																	1
62. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 19, 2024																	1
63. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 26, 2024																	1
64. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 03, 2024																	1
65. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 10, 2024																	1
66. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 17, 2024																	1
67. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 31, 2024																	1
68. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 07, 2025																	1
69. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 14, 2025																	1
70. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 21, 2025																	1
71. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 28, 2025																	1
72. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 04, 2025																	1
73. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 18, 2025																	1
74. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 25, 2025																	1
75. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	March 04, 2025																	1
76. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	March 11, 2025																	1
77. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	March 18, 2025																	1
78. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	March 25, 2025																	1
79. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 01, 2025																	1
Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
80. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 08, 2025																	1
81. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 15, 2025																	1
82. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 22, 2025																	1
83. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	April 29, 2025																	1
84. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	May 06, 2025																	1
85. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	May 13, 2025																	1
86. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	May 20, 2025																	1
87. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	May 27, 2025																	1
88. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	June 03, 2025																	1
89. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	June 10, 2025																	1
90. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	June 17, 2025																	1
91. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	June 24, 2025																	1
92. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 01, 2025																	1
93. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 15, 2025																	1
94. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 22, 2025																	1
95. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	July 29, 2025																	1
96. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 05, 2025																	1
97. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 12, 2025																	1
98. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 19, 2025																	1
99. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	August 26, 2025																	1
Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
100. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 02, 2025																	1
101. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 09, 2025																	1
102. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 16, 2025																	1
103. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 23, 2025																	1
104. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	September 30, 2025																	1
105. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 07, 2025																	1
106. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 14, 2025																	1
107. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 21, 2025																	1
108. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	October 28, 2025																	1
109. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 04, 2025																	1
110. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 11, 2025																	1
111. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 18, 2025																	1
112. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	November 25, 2025																	1
113. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 02, 2025																	1
114. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 09, 2025																	1
115. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	December 23, 2025																	1
116. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 06, 2026																	1
117. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 13, 2026																	1
118. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 20, 2026																	1
119. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	January 27, 2026																	1
Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
120. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 03, 2026																	1
121. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 10, 2026																	1
122. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 17, 2026																	1
123. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	February 24, 2026																	1
124. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	March 03, 2026																	1
125. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	March 10, 2026																	1
126. Heavyweight Showdown nn Canada (March 29, 1966, no publisher listed)	Universal	1	4.00	March 17, 2026																	1

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"CGC Census Analysis" is provided by Greg Holland (©2003-2026).
Data is sourced from the public CGC census (© Certified Guaranty Company, LLC.)
Used with permission of CGC since 2003. Data is from July 01, 2001 to March 17, 2026.
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