Jarvis appeared in 15 games for Boston in 1970, pitching to a record of 0-1 with an earned run average of 3.94 over 16 innings pitched.
The previous season he made his Big League debut, appearing in 29 games, with 12 of them starts, and finishing his rookie year with a record of 5-6, with an ERA of 4.75 in 100.1 innings of work.
He would spend all of 1971 in the California Angels Minor League system, going 4-4 with a bloated 5.88 ERA over 24 appearances, before retiring from pro ball.
All told, he finished his MLB career with a record of 5-7 over 44 appearances, with an ERA at 4.64 over 116.1 innings pitched, along with two complete games and a save, all for the Red Sox.