DeLuca ran onto the ball, zigzagged through five defenders, and unleashed a shot that found the left corner of the net.
Timber Creek advances to the tourney semifinals for the first time. The Chargers will face No. 11 seed Shawnee on Sunday at Eastern.
In another Coaches Tournament quarterfinal thriller, fourth-seeded Haddon Township was pushed to the limit by No. 12 seed Burlington Township before advancing on penalty kicks, 5-4.
The teams played to a 1-1 draw through two overtimes before the host Hawks converted 5 of 6 spot kicks - including a pair by Mike McCutcheon.
Burlington County. Trenton Catholic clinched the Freedom Division title, using second-half goals from Emmanuel Temeh and Charles Wheaton to pull out a 2-0 triumph at Burlington City.
Ricardo Margolies put Ryan Butler's through ball in off the post 3 minutes, 30 seconds into overtime, lifting host Palmyra past New Egypt, 3-2. Travis Ward scored twice for the Warriors, including a header that evened the match with 11 seconds left in regulation.
Carly Bonnet's overtime goal completed third-seeded Haddonfield's 2-1, come-from-behind victory over No. 6 seed Absegami in the quarterfinals of the South Jersey Coaches Tournament.
The Braves' Erica Skroski opened the scoring by putting in a rebound with five minutes to go in the first half. The Bulldogs pulled even 30 seconds into the second half on Katie Johnston's goal.
Haddonfield will face No. 7 seed Paul VI in a semifinal on Sunday at Eastern.
Burlington County. Delran is assured of at least a share of the Patriot Division crown, after the host Bears blanked Bordentown, 2-0.
Senior Kellie Olear made the most of her transition from defense to center-midfield, picking up her first career goal. Nicole Johnson also scored in support of Delran keeper Katie Larson, who earned the shutout with 10 saves.
St. Joseph wrapped up the Cape-Atlantic League National Conference championship with a 3-0 home win over Holy Spirit. Emily DeMarco had a goal and an assist while Becky Boffo turned aside nine shots for the Wildcats.
Ocean City remained perfect in the American Conference with a 3-1 win at Hammonton. Ali Stever scored twice in the first half.