On August 10, 2006 — In the finale of the three-game sweep by the Royals, Red Sox ace Curt Schilling surrenders 10 extra-base hits, tying an American League record. The nine doubles and homer equal the dubious mark set by Dale Gear (1901 Senators) and Luis Tiant (1969 Indians).
Source:
Baseball Reference August 10
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game