2009 Pacific-10 Conference football season
Pac-10 vs. BCS matchups

Date
Visitor
Home
Winner
Notes
September 5
LSU
Washington
LSU
-
September 5
Maryland
Cal
Cal
-
September 12
UCLA
Tennessee
UCLA
UCLA's second straight win against Tennessee
September 12
USC
Ohio State
USC
USC won with a late touchdown
September 12
Purdue
Oregon
Oregon
-
September 19
Arizona
Iowa
Iowa
-
September 19
Cal
Minnesota
Cal
-
September 19
Kansas State
UCLA
UCLA
-
September 19
Cincinnati
Oregon State
Cincinnati
Oregon State's first non-conference home loss since 1996.
September 26
Arizona State
Georgia
Georgia
-
October 3
Washington
Notre Dame
Notre Dame
Overtime
October 17
USC
Notre Dame
USC
USC's eighth consecutive win over Notre Dame
October 31
Washington State
Notre Dame
Notre Dame
Played at the Alamodome in San Antonio, Texas
November 28
Notre Dame
Stanford
Stanford
Stanford's first win over Notre Dame since 2001

Question: When did UCLA defeat Tennessee?
Answer: On September 12, 2009, UCLA defeated Tennessee.