A native San Franciscan, Harry Heilmann attended Sacred Heart High School, and, at the age of 18, joined the Detroit Tigers. A star from the start, he played in the major leagues 13 seasons with time out for military service in World War I. He led the majors in batting in 1921-23-25 and 1927 with averages of .394, .403, .398 and .396. One of only five American Leaguers ever to hit over .400, he is in the top ten with the highest career averages in history: 342. He once made ten consecutive hits.

Inducted into the Bay Area Sports Hall of Fame in 1986.

Plaque location: Sacred Heart Cathedral Prepatory