Two Durham runs in the sixth erased a 4-2 Norfolk lead, and two more in the eighth got the Bulls past the Tides for good.
It was a rough night for Dan Straily, who allowed four runs on six hits in 5.1 innings, though Sean Gilmartin, who allowed two runs in two innings, took the loss.
Chris Bostick (2-for-4) and Zach Vincej (2-for-3) homered for the Tides, as did Jack Reinheimer. The rehabbing DJ Stewart went 0-for-4 with a walk and strikeout.
No. 24 prospect Michael Baumann was excellent for the Baysox on Thursday, tossing six scoreless innings while striking out nine and allowing only one hit.