Pittsburg scored three runs in the first inning and for the exception of one-half inning, held on to that lead into the ninth inning.
Williams singled in Romero in the fourth and the Stompers added three runs in the seventh on singles from Williams and Romero to bring the team within one.
Sonoma’s right fielder and second basemen continued to lead the way in the ninth when Romero singled to tie the game at nine and Williams ended it with a two-run blast to left field.
“There were a bunch of at-bats today where I got to 3-2 count and I feel pretty confident in that count,” Romero said. “Just a credit to this team and the support I have from them.”
With the Stompers now winners of five in a row for the third time this season and 18 of their last 22 games, they turn their attention to the first place San Rafael Pacifics, who come to Palooza Park at Arnold Field for two games. First pitch Tuesday and Wednesday is slated for 6:05 p.m.