The visiting Indians threatened to spoil DelMonte's one-hit, no-walk masterpiece by scratching out a run in the top of the seventh. But West's bats came alive against hard-luck losing pitcher Ryan Levito, with Matt Gianpetro's two-out single up the middle bringing home freshman A.J. Wright with the winning run.
In another Olympic Conference clash that featured less drama but every bit of historical significance, two of South Jersey's premier teams met on Abner Doubleday Field in Cooperstown, N.Y.
Sean Kelly made the trip worthwhile for Cherokee, ranked No. 4 by The Inquirer, as the junior pitched a 10-strikeout, three-hitter in handcuffing top-ranked Washington Township, 4-1.
Zach Ellin batted 2 for 3, stole two bases and scored three times for the Chiefs, who managed six hits off losing pitcher Bill Grubb (nine strikeouts).
Robby Hawn's two-run double ignited an eight-run sixth-inning rally that lifted host Triton over Winslow Township, 11-8.
Colonial. Senior first baseman Tom Jakubowski doubled for his 100th career hit, and also scored the go-ahead run in the fifth inning to send West Deptford past visiting Overbrook, 4-3.
Nick Sciortino batted 3 for 5 with two RBIs, including the go-ahead run in a four-run sixth inning, helping Haddon Heights put away host Collingswood, 9-5.
Doug Young (2 for 3, 4 RBIs) homered to lead off Audubon's seven-run fourth inning, and the Green Wave went on to wash away visiting Woodbury, 8-2.
Cape-Atlantic. A.J. Martinez struck out a career-high 18 to highlight Holy Spirit's 9-3 win at Atlantic City.
Mike Wray raced home on Christian Candelero's sacrifice fly in the bottom of the sixth inning, and Kyle Andrews shut down Middle Township on three hits, making host Ocean City a 1-0 winner.
Nonleague. Brennon Taylor's two-run single in the fifth put Maple Shade ahead to stay, as Tyler Winters tossed a two-hitter in a 6-1 win at Moorestown Friends.
Unranked Gloucester Catholic stormed out to a 4-0 lead in the first quarter, but No. 3 Haddonfield battled back to win, 11-10, when Luke Pease scored off a pass from Gunnar Apgar as time expired in the second overtime of the Olympic Conference thriller.
Apgar and Andrew Augiliero each had a hat trick, while Pease contributed one goal and four assists for the Bulldogs. Steven Jackson (4 goals) and Nick Lanciano (3 goals, 2 assistes) led GC.
In another Olympic match, senior midfielder Colin Roualet totaled four goals and four assists in leading host Cherry Hill East past Clearview, 14-9.
Joe Donnian scored four times for the Pioneers.