Booker made a pair of free throws with 3:17 left in overtime and Long Beach State never trailed again.
Jordan Gilliam's 3-pointer with 22 seconds left in regulation tied the game at 59-all and both teams missed their final shot attempts to send it into overtime.
Booker missed 11 of 14-shot attempts from the field but was perfect from the foul line and made 10 of the 49ers' (11-18, 5-8 Big West Conference) 18 free throws. Bryan Alberts added 16 points for Long Beach State.
Callum McRae led the Highlanders (9-19, 3-9) with 16 points and 10 rebounds, Gilliam scored 15 and Dikymbe Martin scored 14. The Highlanders made just 1 of 2 from the foul line and settled instead for 26 3-point attempts in which they converted eight.
Judge denies MSU request to dismiss Title IX suit
A federal judge on Wednesday denied Michigan State's request to dismiss a Title IX lawsuit filed by a former female student, thus allowing the suit to proceed.
Osabuohien, dismissed by Hogs, surfaces at WVU
Forward Gabe Osabuohien, who was dismissed from Arkansas for undisclosed reasons last week, has transferred to play for coach Bob Huggins at West Virginia.
Loyola's Sister Jean celebrates 100th birthday
Sister Jean Dolores Schmidt turned 100 on Wednesday and is being celebrated in Chicago with various exhibits.