University of San Francisco Athletics

Joseph Francis Giannini was born on September 8, 1888 in Drytown, CA , was a shortstop who played briefly for the Boston Red Sox during the 1911 season. Listed at 5 ft 8 in 155 lb., Giannini batted left-handed and threw right-handed. A native he was signed by the Boston Red Sox out of USF.

Giannini was a major leaguer whose career was short. He appeared in one game and hit a double in two at-bats for a .500 average, without runs or RBI. As a fielder, he collected two assists and committed two errors (Wikipedia).