Head to head · 2026 batting

Otto Kemp vs Marcelo Mayer

So far in 2026 Marcelo Mayer has been worth 0.4 more wins. Both lines are computed from play-by-play on the same constants, so they are measured the same way rather than quoted from two sources.

Otto Kemp PHI

Marcelo Mayer BOS

2026 batting, season in progress. The stronger figure in each row is highlighted — for strikeout rate that is the lower one.
Statistic	Otto Kemp	Marcelo Mayer
G	12	69
PA	27	228
H	2	45
HR	0	3
RBI	0	22
SB	0	3
AVG	.080	.220
OBP	.148	.282
SLG	.080	.312
OPS	.228	.594
ISO	.000	.093
BB%	3.7%	7.0%
K%	37.0%	19.3%
wOBA	.121	.269
wRC+	-36	64
WAR	-0.4	0.0

Career

Totalled over the seasons published here, which is not the same as a whole career: a player who debuted before 2015 begins at 2015, not at his real first game.

Career batting totals. AVG and SLG are recomputed from the components rather than averaged; OBP, wOBA and wRC+ need each season’s own constants and are left to the table above.
Statistic	Otto Kemp	Marcelo Mayer
G	74	111
PA	245	364
H	48	74
2B	11	18
3B	0	1
HR	8	7
RBI	28	32
BB	13	24
SO	77	85
SB	2	3
AVG	.216	.223
SLG	.374	.346
WAR	0.0	0.3

Otto Kemp’s full profile →Marcelo Mayer’s full profile →

More head to heads

The same seasons, measured against somebody else.

Otto Kemp vs

Marcelo Mayer vs

How these are computed

wOBA uses linear weights measured from this season’s own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page. To put these two beside a third, the comparison page takes up to four.