Larry Jansen career ERA

• Best season on file: 3.01 in 1950.
• Most recent: 5.19 in 1956.

Average of 9 regular seasons, 1947 through 1956. Figures come from ESPN's box scores and were last read on September 21, 2026.

CopyCSV

Larry Jansen career ERA, season by season

Season↓	Team↓	GP↓iGP: Games the player appeared in, however briefly.	W↓iW: Games in which this pitcher was credited with the win.	L↓iL: Games in which this pitcher was charged with the loss.	ERA↓iERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.	IP↓iIP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.	K↓iK: Batters this pitcher struck out.	BB↓iBB: Times the batter reached first base on four balls.	WHIP↓iWHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite.	SV↓iSV: Games finished by protecting a narrow lead to the last out.
1947	SF	42	21	5	3.16	248.0	104	57	1.20	1
1948	SF	42	18	12	3.61	277.0	126	54	1.22	2
1949	SF	37	15	16	3.85	259.2	113	62	1.28	0
1950	SF	40	19	13	3.01	275.0	161	55	1.07	3
1951	SF	39	23	11	3.04	278.2	145	56	1.11	0
1952	SF	34	11	11	4.09	167.1	74	47	1.37	2
1953	SF	36	11	16	4.14	184.2	88	55	1.30	1
1954	SF	13	2	2	5.98	40.2	15	15	1.77	0
1956	CIN	8	2	3	5.19	34.2	16	9	1.38	1

What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV