Fred McGriff is well ahead of Yandy Diaz

McGriff leads on both counts: 56.8 wins added to 21.3 over a career, and 34.8 to 20.7 across his seven best seasons.

Yandy Diaz is still playing, so his numbers will keep moving.

first base

Yandy Diaz

Tampa Bay Rays, 2017–2025

21.0

Score, No. 1484 all-time

first base

Fred McGriff

Toronto Blue Jays, 1986–2004

45.8

Score, No. 262 all-time

Tale of the tape

Wins added is how many extra games a player’s teams won because they had him and not a replacement-level player, the kind of fill-in any team can find. In one season, 2 is a solid regular, 5 is an All-Star and 8 or more is an MVP-level year. Score is the average of the career total and the best seven seasons.

Ratings
Yandy Diaz		Fred McGriff
21.0	Score	45.8(better)
21.3	Wins added, career	56.8(better)
20.7	Wins added, best 7 seasons	34.8(better)
1,484	All-time rank	262(better)
9	Seasons	19
Hitting
903	Games	2,460(better)
957	Hits	2,490(better)
100	Home runs	493(better)
424	Runs batted in	1,550(better)
11	Stolen bases

The dot marks the better number in each row.

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