The Sailors led 28-27 at halftime. Reeths-Puffer pulled ahead 38-35 after three quarters, and led by six points early in the fourth, but Mona Shores rallied and tied the game 54-54 at the end of regulation.
The Sailors outscored the Rockets 4-2 in OT.
Freshman Jarvis Walker had 18 points and five rebounds for Mona Shores while sophomore James Gilbert had a double-double with 15 points and 15 rebounds.
Sophomore Carter Fulton led the Rockets with 16 points while freshman Emcee Williams added 13.