Christian Koss

Bats R Throws R6'1" 186 lbBorn 1998 Riverside, USADebut 2025Team SFDraft 2019 R12 #369 Colorado Rockies, University of California - IrvineContract 1 y/$800,000 (26) 2026: $691,860

Projections

2027 NEXT+ 80.8FIELD+ 100.7 at 2BTotal 0.12 WAR

Season	PA	AB	H	2B	3B	HR	BB	SO	SB	AVG	OBP	SLG	OPS	ISO	wOBA	K%	BB%	HIT+	WAR
2026	192	175	41	8	1	4	11	46	4	0.236	0.287	0.353	0.640	0.117	0.282	24.0	5.6	77.6	0.07
2027	153	140	33	6	1	3	8	39	3	0.233	0.283	0.355	0.638	0.122	0.280	25.3	5.2	78.9	0.08

Projected rates are per plate appearance or batter faced; counting stats scale with projected playing time. Statcast measurements inform these projections as inputs and are reported as measurements, not projected.

Most similar through age 27

His ten closest age-27 comparables averaged 65 HIT+ the next season; 8 of 10 played. Averages cover only the players who got a next season, which is why the played count matters.

#	Player	Through	HIT+ then	Next season	Next PA / BF
1	Junior Kennedy	1978	96.0	91.2	250
2	Ike Brown	1969	94.7	135.6	113
3	Bill Pecota	1987	86.7	60.0	206
4	Eric Campbell	2014	97.9	77.6	206
5	Dick Gray	1959	94.3	-9.6	8
6	Jim O'Neill	1920	92.4	did not play
7	Willians Astudillo	2019	96.8	96.6	16
8	Joe Sargent	1921	87.1	did not play
9	Kevin Polcovich	1997	92.4	25.5	238
10	Jim Brideweser	1954	86.2	45.2	63

Batting

Year	Team	G	PA	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	HIT+
2027 proj			153		33	6	1	3		3	8	39	0.233	0.283	0.355	0.638	78.9
2026*	SFN	36	91	5	17	4	0	0		2	2	24	0.193	0.220	0.239	0.458	31.0
2025	SF	76	191	25	46	9	0	3	23	4	9	45	0.264	0.309	0.368	0.676	94.0
Career		76	191	25	46	9	0	3	23	4	9	45	0.264	0.309	0.368	0.676	94.0

Pitching

Year	Team	W	L	ERA	G	GS	SV	IP	BF	HR	BB	SO	PITCH+
2025	SF	0	0	0.00	4	0	0	4.0	16	0	0	0
Career		0	0	0.00	4	0	0	4.0	16	0	0	0

Statcast

Year	PA	EV	LA	Barrel%	HardHit%	Whiff%	Chase%	xBA	xSLG	xwOBA	Sprint
2026	90	85.3	13.0	6.5	29.7	28.7	43.0	0.215	0.297	0.238	28.7
2025	191	86.9	5.5	6.0	33.6	31.6	34.4	0.263	0.402	0.311	29.1

Fielding

Year	Team	Pos	G	Inn	PO	A	E	DP	Fld%	Runs saved
2025	SF	2B	46	339	56	118	3	19	0.983	+5.4
2025	SF	3B	13	70	5	14	2	3	0.905	+0.1
2025	SF	SS	7	32	7	13	2	4	0.909	-1.8
2025	SF	P	4	4	0	0	0	0		-0.1

Runs saved covers the Statcast era; for catchers it includes framing.

Minor leagues

Year	Level	Team	Side	PA / BF	Line	AVG / ERA	OPS
2025	AAA	Sacramento River Cats	Bat	27	1 HR, 0 SB	0.296	0.777
2024	AAA	Sacramento River Cats	Bat	197	5 HR, 5 SB	0.257	0.747
2024	AA	Richmond Flying Squirrels	Bat	96	2 HR, 6 SB	0.386	1.080
2024	Rk	ACL Giants	Bat	31	2 HR, 2 SB	0.292	1.044
2023	AAA	Worcester Red Sox	Bat	124	1 HR, 2 SB	0.237	0.636
2023	AA	Portland Sea Dogs	Bat	147	2 HR, 11 SB	0.224	0.619
2023	Rk	FCL Red Sox	Bat	25	1 HR, 2 SB	0.292	0.778
2022	AA	Portland Sea Dogs	Bat	532	17 HR, 16 SB	0.260	0.739
2021	A+	Greenville Drive	Bat	468	15 HR, 10 SB	0.271	0.776

Splits

Year	vs LHP	vs RHP	Home	Away
2026	0.194	0.236	0.222	0.227
2025	0.316	0.319	0.366	0.272

wOBA by split, from pitch level data, 2015 on. For pitchers the split is the batter side faced.