1972 Topps #537 Bob Locker
About Bob Locker
Locker went 6-1 with a 2.65 ERA and 10 saves for the 1972 Athletics, usually working the seventh and eighth innings as the setup man for Rollie Fingers. He gave up three runs in two innings of the ALCS against Detroit. On October 21 he made his only World Series appearance, relieving Vida Blue with two outs in the sixth inning of Game 6. His #537 is a fifth-series card with Oakland.
Bob Locker was a right-handed relief pitcher from George, Iowa, who built his career on a sinker he could throw with full fastball velocity. A geology graduate of Iowa State, he lost two seasons to military service before reaching the majors at age 27 in 1965. He pitched for the Chicago White Sox, Seattle Pilots, Milwaukee Brewers, Oakland Athletics and Chicago Cubs. In Chicago he worked in a bullpen that led the league in ERA for four straight years, and in Oakland he was part of the team that won the 1972 World Series. He finished with a 2.75 career ERA and 95 saves over 576 games, all in relief.
Sources: Wikipedia · SABR BioProject · Baseball-Reference
Graded population (PSA & SGC)
| Grader | Total | 10 | 9 | 8 | 7 | 6 | 5 | 1-4 | Auth |
|---|---|---|---|---|---|---|---|---|---|
| PSA | 189 | 7 | 63 | 97 | 13 | 3 | 2 | 4 | 0 |
| SGC | 4 | 0 | 0 | 3 | 0 | 0 | 0 | 1 | 0 |
Graded population — a scarcity guide, not a price. Data as of 2026-10-19. Half grades fold down for both graders (8.5→8); PSA qualified slabs (OC, ST, PD, MC and the like) are not counted.
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Related cards
Team card: #454 Oakland A's
More Oakland Athletics cards:
- #17 Dave Duncan
- #41 Tommy Davis
- #42 Tommy Davis In Action
- #62 Angel Mangual
- #75 Bert Campaneris
- #90 1971 A.L. Home Run Leaders
- #92 1971 A.L. E.R.A. Leaders
- #94 1971 A.L. Pitching Leaders
- #96 1971 A.L. Strikeout Leaders
- #111 Jim Grant
- #137 Dick Williams
- #169 Vida Blue
- #170 Vida Blue In Action
- #189 Gene Tenace
Frequently asked questions
What is the 1972 Topps #537 card?
It is card #537 of the 787-card 1972 Topps Baseball set, picturing Bob Locker of the Oakland Athletics.
How many cards are in the 1972 Topps Baseball set?
787 cards, tracked as 794 collectible states. Numbers run from 1 to 787 with none skipped, in six print series (#1-132, #133-263, #264-394, #395-525, #526-656 and #657-787, the high numbers); 7 cards carry catalogued print variations that the master set counts separately - four Chicago Cubs cards with yellow or green under the "C" and "S" of the team name, the #251 and #478 checklists with smaller or larger print on the front, and the #604 checklist with its copyright line aligned right or left.
Sources: Trading Card Database, PSA CardFacts, BaseballCardPedia, Cardboard Connection, Baseball Almanac, Baseball-Reference, the SABR BioProject and the National Baseball Hall of Fame, PSA & SGC population reports. Card data compiled and maintained by T206Cards.com. Page last updated 2026-10-25.