Taveion Hollingsworth scored five of his 12 points in the second overtime Friday night as visiting Dunbar edged Tates Creek 58-52.
Darius Williams led the Bulldogs with 17 points, including seven after regulation.
The Bulldogs (9-12) also beat Tates Creek 78-52 on Jan. 14.
The Commodores (6-15) have lost nine of their last 10 games.
Jordan Fucci topped Tates Creek with 14 points. Desmond Duke added 12 and Blake Rose had 10.
Dunbar led 44-41 with 31 seconds left in regulation after Hollingsworth scored on a runout.
But Tates Creek got a tip-in by Alex Polus with 16 seconds left and a free throw by Fucci at :06.
In the first overtime, Williams hit one of two free throws with 43.3 seconds left to put Dunbar up 48-46.
Duke forced another session, sinking two freebies with 3.5 seconds on the clock.
Tates Creek scored the first four points of double overtime, getting two free throws from Fucci and two by Duke.
The Commodores wouldn't score again, though, as Dunbar scored the last 10 points.
Williams drove through a crowd to lay in a bucket with 2:24 left, and hit one of two free throws at 1:24.
Hollingsworth converted a go-ahead three-point play with 53.3 seconds left.
While Tates Creek was turning the ball over on three straight possessions, Dunbar increased the margin to 55-52 on a Williams free throw with 43 seconds left.
Hollingsworth added two free throws at 29.4, and Troy Black made one of two for the final margin.
Tates Creek led 21-16 at halftime and was up by as many as nine in the third quarter.
"We've got a young team, so sometimes somebody, if it's not their night, we keep switching personnel trying to find the right combination," Dunbar Coach Scott Chalk said. "We played a little bit harder. We started getting some stuff off of our press, which we weren't getting early in the first half.
"Really, that's to their credit. They had the pace so slow that we couldn't really get any flow in the first half. We just tried to create some energy and get that picked up a little bit."
Tates Creek kept the pace slow with a zone defense, a move that came as no surprise to Chalk.
"The key last time was we got ahead early and they couldn't stay in zone," he said. "If they can stay in their zone and ... they've got big guys that can rebound, so they're tough when they can stay in that."
Dunbar 58, Tates Creek 52 (2OT)
DUNBAR (9-12) — Lewis 9, Black 1, Hollingsworth 12, Williams 17, Hurst 0, Corrio 3, Penny 4, Davis 4, Ward 6, Clark 2.
TATES CREEK (6-15) — Duke 12, Hart 4, Fucci 14, Davis 9, Rose 10, Sturdivant 1, Polus 2.
Paul Dunbar 10 6 14 14 4 10—58
Tates Creek 7 14 11 12 4 4—52