On August 12, 1929 — At Boston‚ Guy Bush‚ the National League’s leading pitcher‚ loses his 2nd game‚ bowing as a reliever‚ 4 – 2‚ in 10 innings. Bush has won 16.

Source:
Baseball Reference August 12
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game