• Card series: Diamond Heads '15
• City: Philadelphia
• Team: Athletics (AL)
• League: American League
• Hall: National Baseball Hall of Fame

Herbert Jefferis Pennock (1894-1948) was one of the premier left-handers in baseball history, winning 240 games and helping the Yankees to four pennants from 1923-32. Connie Mack rued the day he let Pennock go to Boston in 1915, giving up on a talent that would result in a plaque at Cooperstown. The Sox, too, gave up on Herb, sending him as the last of the out-migration (11 starters) from Boston to New York in 1923. An immediate hit in the new stadium in the Bronx, Pennock’s easy-going manner and slow curves kept his team relaxed. He rarely faced the aces of his era but was used in tough spots and key match-ups. Pennock excelled under the pressure of World Series in the Big Apple. In perhaps his finest moment, Herb clinched NY’s first title in ‘23 on one day’s rest; an effort renowned umpire Billy Evans called “the greatest pitching performance I have ever seen.” More October glory would follow including decisive saves in his finale against the Cubs in ‘32.

• Pennock went on to a front-office career, ending with the Phillies in ‘47. He closed his tenure in infamy as he fought Branch Rickey bitterly to keep Jackie Robinson out of Philadelphia
• Elected to Hall of Fame: 1948