Teammate pairs homering in same game: Aaron/Mathews, Ruth/Gehrig, Mays/McCovey.

Teammate pairs with most career home runs as TEAMMATES, not blindly adding up their team totals. Saturday, April 18, 2020

Pairs of teammates for seasons in which each played a comparable or significant amount as the other. So for the leading pair that would be 1954-1966, which does not include Eddie Mathews leading the National League in home runs in 1953 and does not include Hank Aaron after 1966 ...

Of the three pairs with the most total home runs, Aaron/Mathews hit the most home runs but also had the most AB and the worst ratio AB/HR. Ruth/Gehrig had the fewest HR and AB but the best ratio.

Hank Aaron and Eddie Mathews

Willie Mays and Willie McCovey

Babe Ruth and Lou Gehrig
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Teammate pairs home runs in same inning and multiple home runs in same game. Friday, April 24, 2020
The pairs with the most home runs:
Hank Aaron and Eddie Mathews 1954-1966: Braves 863
Willie Mays and Willie McCovey 1959-1971: Giants 800
Babe Ruth and Lou Gehrig 1925-1934: Yankees 771

Shockingly, among those three pairs, there was only one occurrence of a pair each hitting multiple home runs in the same game:

Tuesday, May 29, 1928

HR: Lou Gehrig 2 (10, 1 off Lloyd Brown, 4th inn, 0 on, 0 outs to RF, 1 off Milt Gaston, 3rd inn, 2 on, 0 outs to CF-RF); Babe Ruth 2 (18, 2 off Lloyd Brown, 4th inn, 0 on, 0 outs to RF; 7th inn, 0 on, 2 outs to LF) ...

Not surprisingly, both Ruth and Gehrig homered in the same inning, back to back, since they batted 3 and 4 in the Yankee lineup in 1928. FYI:

Tuesday, May 30, 1961

Same score as the 1928 game.
HR: Mickey Mantle 2 (13, 1 off Gene Conley, 1st inn, 2 on, 1 out to Deep CF-RF, 1 off Mike Fornieles, 8th inn, 0 on, 2 outs to Deep CF-RF); Roger Maris 2 (11, 1 off Gene Conley, 3rd inn, 0 on, 1 out to Deep RF, 1 off Mike Fornieles, 8th inn, 2 on, 2 outs to Deep RF) ...

Mickey Mantle and Roger Maris, in their second season as teammates, both homered twice in this game. They also homered back to back in the 8th inning off Mike Fornieles...

In 1961 Mantle and Maris hit back to back home runs in the same inning three times in 13 days in July off starting pitchers:
Early Wynn, White Sox in Chicago, 1st inning, Thursday, July 13,1961
Bill Monbouquette, Red Sox in Boston, 1st inning, Friday, July 21,1961
Frank Baumann (lefty) White Sox in Yankee Stadium, 4th inning, Tuesday, July 25,1961, first game of a doubleheader in which Maris hit two home runs in each game; the 4th inning home runs hit the two foul poles: Maris right, Mantle left batting righty against the southpaw...

The three top teammate pairs homering in the same inning:

17 times: Aaron Mathews ...
13 times: Mays McCovey ...
19 times: Ruth Gehrig
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The post above lists the instances the three top teammate pairs homering in the same inning.

But overall, how often did the pairs homer in the same game?

Aaron and Mathews: 75

Ruth and Gehrig: 73, including Gehrig's four home run game https://www.baseball-reference.com/boxes/PHA/PHA193206030.shtml

Mays and McCovey: 68, NOT including Mays four home run game https://www.baseball-reference.com/boxes/MLN/MLN196104300.shtml