Head to head · 2026 batting

Ian Happ vs Mike Yastrzemski

In 2026 Ian Happ has been worth 1.4 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.

Their 2025 seasons were among each other's nearest on rate statistics.

Ian Happ CHC

Mike Yastrzemski ATL

2026 season

2026 batting. The stronger figure in each row is highlighted — for strikeout rate that is the lower one.
Statistic	Ian Happ	Mike Yastrzemski
G	155	138
PA	636	408
H	119	81
HR	24	12
RBI	68	41
SB	4	1
AVG	.218	.224
OBP	.326	.309
SLG	.412	.380
OPS	.738	.688
ISO	.194	.155
BB%	12.7%	10.0%
K%	29.7%	24.0%
wOBA	.328	.308
wRC+	106	92
WAR	2.0	0.6

Postseason

Box-score figures only: October is kept out of the season constants, so there is no wOBA, FIP or dbWAR for it.

Every published postseason, batting, summed with the rates recomputed from the counts.
Statistic	Ian Happ	Mike Yastrzemski
G	18	11
PA	58	27
H	8	1
HR	3	0
RBI	5	1
BB	6	1
SO	20	8
SB	0	0
AVG	.157	.040
OBP	.246	.077
SLG	.353	.040
OPS	.599	.117

Career

Totalled over the seasons published here, which is not the same as a whole career: a player who debuted before 2005 begins at 2005, 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 season table.
Statistic	Ian Happ	Mike Yastrzemski
G	1,282	968
PA	5,085	3,547
H	1,069	735
2B	245	180
3B	19	24
HR	197	135
RBI	625	405
BB	621	370
SO	1,364	863
SB	74	26
AVG	.243	.236
SLG	.442	.440
WAR	23.3	13.4

Ian Happ’s full profile →Mike Yastrzemski’s full profile →

More head to heads

The same seasons, measured against somebody else.

Ian Happ vs

Mike Yastrzemski 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.