MLB · Career head-to-head

Bert BlylevenvsTom Seaver

Regular-season careers from the StatVault encyclopedia — the same tables as each player's profile.

P · VAL group PITCH

Bert Blyleven

1970–1992 · 22 seasons

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P · VAL group PITCH

Tom Seaver

1967–1986 · 20 seasons

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At a glance

Bert Blyleven and Tom Seaver: seasons, VAL, honors and league-leading seasons
Bert Blyleven	Stat	Tom Seaver
22	Seasons	20
142.3	Career VAL	155.9
15.3 (1973)	Peak-season VAL	14.3 (1973)
Inducted 2011	Hall of Fame	Inducted 1992
2×	All-Star Selections	12×
—	Cy Young Awards	3×
—	Rookie of the Year	1×
0	Black ink (league-leading seasons)	1
17	Gray ink (top-10 finishes)	15

VAL is Value Above League — regular-season production measured against the league at the same position group (MLB VAL board). Black and gray ink count seasons from 1950 on.

Career regular season

Career regular-season statistics both Bert Blyleven and Tom Seaver have
Bert Blyleven	Stat	Tom Seaver
Career
699	Games	677
Batting
59	Hits	202
0	Home runs	12
25	RBI	86
19	Runs	99
0	Stolen bases	4
5

VAL by ageEach season plotted at the player's age that season, so careers line up by age rather than by calendar.

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Pitching
287	Wins	311
250	Losses	205
0	Saves	1
4970.0	Innings pitched	4782.2
3,701	Strikeouts (pitching)	3,640
3.31	ERA	2.86
1.20	WHIP	1.12
116	ERA+	127

Age	Bert Blyleven	Tom Seaver
19	5.3	—
20	8.2	—
21	6.2	—
22	15.3	3.8
23	10.6	9.2
24	8.9	10.3
25	9	12.6
26	10.7	13.8
27	7.8	3.7
28	4.7	14.3
29	4.7	5.8
30	5.4	13.3
31	—	9.7
32	4.4	13.8
33	9.3	6.1
34	11	8.4
35	4	2.6
36	4.2	5.5
37	0	0
38	11.3	6.1
39	0.9	5.2
40	—	7.7
41	0.4	4