The oldest first-time managers in Major League Baseball history:
Sheehan was surprisingly appointed to manage the San Francisco Giants in 1960 at age 66 after the firing of Bill Rigney, who had the team in second place in the National League with a 33-25 record. It didn't pay off. Sheehan went 46-50, the Giants finished fifth and his managing career was over.
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He's the oldest rookie manager to start a season at age 64. He took over the Toronto Blue Jays in 1980, leading the expansion team to a 67-95 mark - its first season shy of 100 losses. They went 37-69 over the strike-shortened 1981 season, and Mattick declined an offer to return for a third season.
He was 62 when he took over as Chicago White Sox manager in 1950, replacing Jack Onslow after 30 games. Corriden went 52-72 for a sixth-place team, his only managing experience in the big leagues.
He was 60 years, 7 months old when appointed interim manager of the Atlanta Braves during the 2016 season. After a dismal start under previous manager Fredi Gonzalez, the Braves went 52-51 over their final 103 games, including wins in 12 of 14 games to close the season. Snitker was kept on as full-time manager for the 2017 season.