MLB · Career head-to-head

Tom SeavervsBert Blyleven

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

P · VAL group PITCH

Tom Seaver

1967–1986 · 20 seasons

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P · VAL group PITCH

Bert Blyleven

1970–1992 · 22 seasons

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At a glance

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

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 Tom Seaver and Bert Blyleven have
Tom Seaver	Stat	Bert Blyleven
Career
677	Games	699
Batting
202	Hits	59
12	Home runs	0
86	RBI	25
99	Runs	19
4	Stolen bases	0
108

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

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