Most career home runs against the Yankees: Foxx, Williams, ...

I was wondering who hit the most regular season home runs against the Yankees and figured it must be Harmon Killebrew. Then I checked Ted Williams and he had many more but in many more at bats. But this link https://www.baseball-reference.com/play-index/event_finder.cgi? provided the basic answer but conflicted with numbers for individuals on its own website.

Jimmie Foxx hit 70, not 69. Ted Williams 62, not 60. Hank Greenberg had 53, not the 45 shown below.

Here is the top ten list but remember the numbers are low for some players. More correct numbers are below.

2321 Batters

Jimmie Foxx	69
Ted Williams	60
Manny Ramirez	55
David Ortiz	53
Carl Yastrzemski	52
Harmon Killebrew	47
Rafael Palmeiro	47
Hank Greenberg	45
Rocky Colavito	44
Al Simmons	41

I find this list surprising, especially considering that more modern teams play fewer games than the 22 seven American League (AL) teams played against the Yankees through 1960 before modern expansion. We'd have to check at bats for each to get a better understanding. And correct the home run totals.

AB%: AB against that team/total AB
HR%: HR against that team/total HR
AB/HR: lower is better

Foxx:

	Split	AB	HR	AB%	HR%	AB/HR
1	Detroit Tigers	1,132	93	13.92%	17.42%	12.2
2	St. Louis Browns	1,058	87	13.01%	16.29%	12.2
3	Chicago White Sox	1,090	75	13.40%	14.04%	14.5
4	New York Yankees	1,077	70	13.24%	13.11%	15.4
5	Washington Senators	1,099	69	13.51%	12.92%	15.9
6	Cleveland Indians	1,146	67	14.09%	12.55%	17.1
7	Philadelphia Athletics	478	32	5.88%	5.99%	14.9
8	Boston Red Sox	604	31	7.43%	5.81%	19.5
9	Boston Braves	89	2	1.09%	0.37%	44.5
10	Cincinnati Reds	71	2	0.87%	0.37%	35.5
11	Brooklyn Dodgers	92	2	1.13%	0.37%	46.0
12	Pittsburgh Pirates	46	2	0.57%	0.37%	23.0
13	St. Louis Cardinals	45	2	0.55%	0.37%	22.5
14	Chicago Cubs	16	0	0.20%	0.00%
15	Philadelphia Phillies	29	0	0.36%	0.00%
16	New York Giants	61	0	0.75%	0.00%
	Totals	8,133	534			15.2

Foxx's AB/HR:

career: 15.2

against Yankees: 15.4

Foxx's home run rate against the Yankees was slightly worse than against all teams, including the Yankees. His being the player with the most home runs against the Yankees seems to be due to the number of AB against them.

Williams:

	Split	AB	HR	AB%	HR%	AB/HR
1	Kansas City Athletics	1,105	91	14.34%	17.47%	12.1
2	Detroit Tigers	1,167	88	15.14%	16.89%	13.3
3	Baltimore Orioles	1,064	80	13.81%	15.36%	13.3
4	Cleveland Indians	1,117	79	14.50%	15.16%	14.1
5	Chicago White Sox	1,125	65	14.60%	12.48%	17.3
6	New York Yankees	1,035	62	13.43%	11.90%	16.7
7	Washington Senators	1,093	56	14.18%	10.75%	19.5
	Totals	7,706	521			14.8

Williams had his second fewest home runs against the Yankees (and most BB: 309) and a home run rate much higher than that against all teams, including the Yankees. Like Foxx, Williams had more than 1,000 AB against the Yankees.

Ramirez hit home runs against about all 30 teams and he hit the most against the Yankees, one more than against Toronto. So rather than provide full lists for the remaining 8, there's a summary matrix below.

		Yank	Yanks	Yanks	Yanks	Yanks	Yanks	career	career	career	most	most	most	most
		rank	AB	HR	AB%	HR%	AB/HR	AB/HR	AB	HR	AB	HR	AB/HR	team
1	Foxx	4	1,077	70	13.24%	13.11%	15.4	15.2	8,134	534	1,132	93	12.2	Tigers
2	Williams	6	1,035	62	13.43%	11.90%	16.7	14.8	7,706	521	1,105	91	12.1	Athletics
3	Ramirez	1	733	55	8.89%	9.91%	13.3	14.9	8,244	555				Yanks
4	Greenberg	2	730	53	14.06%	16.01%	13.8	15.7	5,193	331	716	63	11.4	Browns
4	Ortiz	3	894	53	10.35%	9.80%	16.9	16.0	8,640	541	929	62	15.0	Blue Jays
6	Yastrzemski	2	1,243	52	10.37%	11.50%	23.9	26.5	11,988	452	1,310	65	20.2	Tigers
7	Killebrew	8	830	47	10.19%	8.20%	17.7	14.2	8,147	573	941	75	12.5	Athletics
7	Palmeiro	3	705	47	6.73%	8.26%	15.0	18.4	10,472	569	793	52	15.3	Mariners
9	Simmons	2	1,202	45	13.72%	14.66%	26.7	28.5	8,759	307	1,214	46	26.4	Browns
10	Colavito	4	790	44	12.15%	11.76%	18.0	17.4	6,503	374	766	55	13.9	Twins

BOLD is best.

RED is worst.

Yank rank is homers hit relative to all teams.

Most: homers hit against a team.

AB%: AB against that team/total AB
HR%: HR against that team/total HR
AB/HR: lower is better