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From BR Bullpen
Robert Henry Mavis
- Bats Left, Throws Right
- Height 5' 7", Weight 160 lb.
- Debut September 17, 1949
- Final Game September 17, 1949
- Born April 8, 1918 in Milwaukee, WI USA
- Died March 1, 2005 in Little Rock, AR USA
 Biographical Information
Bob Mavis did not make his professional baseball debut until he was 26 years old. He played with the Little Rock Travelers of the Southern Association from 1944 to 1948 and hit above .300 in each of his seasons with the club. He hit .301 for AAA Toledo in 1949 and was called up by the Detroit Tigers in September. He appeared in just one game, as a pinch runner. After his playing career ended, he managed for several years.
 Year-by-Year Managerial Record
|1954||Idaho Falls Russets||Pioneer League||74-58||3rd||Detroit Tigers||Lost in 1st round|
|1955||Little Rock Travelers||Southern Association||--||Detroit Tigers||--||replaced by Steve Souchock June 27|
|1957||Durham Bulls||Carolina League||79-61||1st||Detroit Tigers||League Champs|
|1963||Duluth-Superior Dukes||Northern League||77-43||1st||Detroit Tigers||2nd in Baukol Playoffs|
|1964||Knoxville Smokies||Southern League||67-73||5th||Detroit Tigers|
|1966||Rocky Mount Leafs||Carolina League||--||Detroit Tigers||--||replaced Al Federoff 5/28-6/19|
|1969||Billings Mustangs||Pioneer League||--||Seattle Pilots||--||replaced by Roland LeBlanc|