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.
Virginia's Bennett rejects raise in new deal
Virginia coach Tony Bennett turned down a raise while getting an extension, asking that the money be used for the program.
NBA agents reject NCAA's certification proposal
The NBPA sent a letter on behalf of certified player agents to the NCAA that refuses to submit to a proposed certification process to work with undergraduate players testing the NBA draft.
Kentucky gets SF Clarke, No. 4 prospect in 2021
Small forward Terrence Clarke has announced he is headed to Kentucky. Clarke, the No. 4 prospect in the Class of 2021, is expected to reclassify into the Class of 2020.