Djad Hailey tied the game in the fifth with a two-run, two-out single. Billingsley, who also pitched a complete game with seven strikeouts for the win, plated Justin Riccobono with the deciding run.
Also in the Colonial, C.J. Coakley knocked in seven runs, including a fourth-inning grand slam, steering Collingswood past visiting Paulsboro, 12-0.
Tri-County. John Brue hit his eighth homer of the season, Cody Brown doubled twice and Joe Brooks went 3 for 5 with a homer and five RBIs as Gloucester Catholic buried host Clearview, 18-6.
Highland's 10-0 success against visiting Deptford featured Vince Ciccarelli's complete-game five-hit shutout, and his two hits, two RBIs and two runs scored. Joe Sigismondi chipped in with three hits and three RBIs.
Three hits each by Matt Dougan, Andy Oliver and Steve Mulligan fueled Penns Grove's 14-7 win at Glassboro.
Olympic. Washington Township overpowered visiting Triton, 13-1, behind Bill Grubb's three-hit pitching, Chris DeFranco's four hits and two RBIs, and Dan Simnor's three hits and three runs scored.
Cape-Atlantic. St. Augustine pitcher Corey Dick tossed a one-hitter at host Mainland, 14-1, and helped himself by collecting three singles and three RBIs in the Hermits' 11-hit attack. St. Augustine snapped a 1-1 deadlock with a 12-run third inning in which Carlo Randazzo had a bases-clearing triple.
Winning pitcher Sawyer Brown tied the game with a two-run double in the fourth inning and knocked in another in the sixth to push Buena past visiting Middle Township, 4-2.
Holy Spirit dealt host St. Joseph a 6-1 setback behind Kevin Cicali's single, double and three runs batted in. Winning pitcher A.J. Martinez threw a complete game with six strikeouts.
Lower Cape May's Chris Grace (6-2) threw his fifth complete game of the season, a 4-0 shutout of visiting Oakcrest. Grace fanned six, and George Mooer had a key two-run single.
Nonleague. Westampton Tech leadoff hitter Eddie Jaslow scored two runs and poked a pair of RBI singles in a 12-11 win at Doane Academy. Doane second baseman Ryan Dronson, who batted .592 this spring, slugged a pair of home runs.
Shawnee got balanced scoring from D.J. Carruthers (four goals), Kyle Borbi (three), Owen Demmerly (three) and Kyle Wigley (three) amid a 15-4 Olympic Conference win at Lenape.