64-65.
Overall, here were the HOF centers numbers against the league:
Bellamy: 24.8 ppg, 14.6 rpg, and .509 FG%.
Russell: 14.1 ppg, 24.1 rpg (led league), 4.7 apg, and .438 FG%.
Reed: 19.5 ppg, 14.7 rpg, and a .432 FG%.
Nate (full season): 16.5 ppg, 18.1 rpg, .419 FG%.
Nate (as a starter- 40 games): 20.9 ppg 24.9 rpg (known 17 games), no known FG% games.
Wilt (with SF...38 games): 38.9 ppg, 23.5 rpg, 3.1 apg, .499 FG%.
Wilt (with Phil... 35 games): 30.1 ppg, 22.3 rpg, 3.8 apg, .528 FG%.
Wilt (full season ...73 games): 34.7 ppg, 22.9 prg, 3.4 apg, .510 FG%.
BTW, the NBA averaged 110.6 ppg on an eFG% of .426. And in the post-season, it averaged 113.7 ppg on an eFG% of .429.
Reed's stats vs the other HOF centers:
Thurmond in 3 H2H's: 9.7 ppg, no known rpg, and no known FG%s.
Russell in 9 H2H's: 19.7 ppg, 18.6 rpg, no known FG%'s.
Bellamy in 10 H2H's: 21.2 ppg, 17.0 rpg (3 known games) and no known FG%.
Wilt in 12 H2H's: 22.9 ppg, 17.0 rpg (2 known H2H's), .333 FG% (1 known game.).
Reed had games of 38 and 35 points against Wilt. His high game against Russell was 25 points. His high game against Nate was only 15 points. And his high game against Bellamy was 31.
Bellamy's stats vs. the other HOF centers:
Thurmond in 5 H2H's: 17.4 ppg, 13.0 rpg (3 known games), no known FG%'s.
Reed in 10 H2H's: 22.6 ppg, 14.0 rpg (only 1 known game), no known FG%'s.
Russell in 9 H2H's: 25.8 ppg, 15.8 rpg (5 known games), no known FG%'s.
Wilt in 9 H2H's: 26.3 ppg, 14.1 rpg (7 known games), no known FG%'s.
Bellamy's high scoring game against Russell was 45 points. He also had two other 32 point games against him. He had games of 30 and 31 points against Reed. He had a 30 point game against Nate (his next highest was 20.) And his high games against Wilt were 37, 33, 32, and 31 points.
Thurmond's stats against the other HOF centers:
Reed in 3 H2H's: 20.0 ppg, 30.0 rpg (1 known game), no known FG%'s.
Bellamy in 5 H2H's: 22.0 ppg, 29.7 rpg (3 known games), no known FG%'s.
Russell in 4 H2H's: 22.0 ppg, 22.7 rpg (3 known games), no known FG%'s.
Wilt in 3 H2H's: 18.7 ppg, 20.0 rpg (1 known game), no known FG%'s.
Thurmond had a monster 30-32 game against Bellamy, as well as another 28-37 game against him. He had a 21-30 game against Reed, and a high point game of 22 points against him. He had games of 26-20, 22-19, and 21-29 against Russell in their four H2H's. And against Wilt he had a 25-20 game.
Russell vs. the other HOF centers:
Nate in 4 H2H's: 12.0 ppg, 32.7 rpg (3 known games), .333 FG% (1 known)
Reed in 9 H2H's: 16.0 ppg, 21.1 rpg (8 known), .547 FG% (6 known games)
Bellamy in 9 H2H's: 12.9 ppg, 19.7 rpg, .475 FG% (5 known games.)
Wilt in 11 reg H2H's: 12.6 ppg, 22.2 rpg, 4.6 apg, .281 FG% (10 known)
Russell had games of 20-25, 22-30, 24-23, and 24-24 against Reed (and another with 38 rebounds.) Russell had one game against Nate of 20-41 (yes 41 rebounds.) He had games of 22-17 and 22-22 against Bellamy. And against Wilt, Russell's high point game was 18, and his high rebounding game was 27.
And continuing with the Laker H2H's for both Russell and Wilt:
Russell against LA in 10 reg H2H's: 15.9 ppg, 26.7 rpg, .436 FG% (9 known)
Russell vs. LA in 5 Finals games: 17.8 ppg, 25.0 rpg, .702 FG% (yes .702.)
Russell vs, Wilt in 7 EDF games:
15.6 ppg, 25.1 rpg, 6.7 apg, .447 FG%.
Russell's high point game in the EDF"s against Wilt was 22 points. His high rebounding game was 32.
Wilt vs. the other HOF centers:
Bellamy in 9 H2H's: 38.3 ppg, 21.7 rpg, .547 FG% (8 known games.)
Reed in 12 H2H's: 38.6 ppg, 21.2 rpg, .532 FG% (8 known games.)
Russell in 11 reg H2H's: 25.4 ppg, 26.5 rpg, 4.2 apg, .473 FG%
Nate in 3 H2H's: 26.7 ppg, 26.3 rpg, .500 FG%.
Chamberlain had a horrible 7-21 FG/FGA game against Nate, but historically, that was an aberration. He also had a 34-26 game, on 13-20 FG/FGA against him, as well. Overall, in their 3 H2H's, Wilt held a 3-0 scoring margin, and a 1-0 margin in their only known rebounding H2H.
Wilt just shelled Reed in the majority of their 12 H2H's. He outscored him 11-1, including margins of 37-22, 29-12, 46-25, 52-23, 41-8, and 58-28. He also had rebounding games of 28, 32, and 32 against Reed.
Wilt continued his plastering of Bellamy, too. He held a 7-2 scoring margin edge, including margins of 51-33, 43-25, 56-37, 40-16, and 53-20. Chamberlain also held a 6-1 edge in their known rebounding H2H's, which included margins of 29-16, and 28-10.
The Chamberlain-Russell duels were continuing to become more-and-more one-sided, as well. In their 11 regular season H2H's, Chamberlain enjoyed a 10-1 scoring edge (and Russell's lone "win" was 11-8 in a game in which Wilt left injured.) Included were margins of 24-6, 31-7, and 37-16. Wilt also outrebounded Russell by an 8-3 margin, which included margins of 32-24, 26-17, 34-17, and 43-26. And again, look at Russell's known FG%... an unfathomable .281 in the known 10 of their 11 season H2H's (and in one game Russell shot an unbelievable 0-14!)!
And, Wilt vs. LA in 8 H2H games:
29.9 ppg, 22.4 rpg, and on a .476 FG%.
This was Wilt's worst season against the Lakers to date, but he still put up three 40+ games (with a high of 41 points.)
Wilt vs Russell in 7 EDF's games:
30.1 ppg, 31.4 rpg, 3.3 apg, and a .555 eFG%.
Wilt outscored Russell in all 7 games, including margins of 30-15, 34-18, 30-12, 30-12, and 33-11. Chamberlain also held a 5-2 margin in rebounding H2H's in that post-season, including margins of 37-26, and 39-16.
Again...just total domination against four HOF centers.
So, as you can see, Thurmond averaged a near peak HIGH in ppg in that season. His scoring would drop slightly after that when the Warriors adeed rookie Rick Barry and also Jeff Mullins. In terms of pure athleticism...a PEAK Nate played from '65 thru '67. Injuries slowly took a toll after that.
As for his 73-74 season...he was in a state of severe decline. He only played in 65 games, and his overall production took a HUGE drop.
So, the reality was, a prime Nate played from '65 thru '73. And a PEAK Thurmond played from '65 thru '67. And as you and I both know, he came in second in the MVP balloting in the '67 season (and behind Chamberlain.)
BTW, here were Nate's and Wilt's H2H numbers from that '64-65 season, thru their six H2H's in the '65-66 season, and their first two H2H's in the 66-67 season...or first 14 games...
Nate: 16.1 ppg, 18.9 rpg, .356 FG% (4 known games)
Wilt: 28.2 ppg, 26.2 rpg, .514 FG%.
Chamberlain outscored Nate in those 14 games by a 13-1 margin, and outrebounded him by a 12-2 margin. And again, in those 14 games...SIX games of 30+ points, (30, 30, 33, 34, 38, and 45 points), including margins of 30-10, 33-17, 38-15, and 45-13.
Overall, and thru their first 24 h2H's, which covered the '67 Finals...Chamberlain enjoyed a 21-2-1 scoring margin, and an 18-5-1 rebounding margin.