Mancuso completed the 2.6-mile course in 15 minutes, 31 seconds. Mancuso’s teammate, Sam Baskin, finished second in 15:52 for the Yellowjackets (4-0), who clinched the STAC East Division title.
The Yellowjackets’ girls fell, 24-35, to Forks.
Missy Emilio and Jamie Keown finished third and fourth, respectively, for OHS. Emilio crossed in 19:27 and Keown finished in 19:53.
The Yellowjackets will travel to the Loyal-Greenman Invitational on Saturday at Ely Park in Binghamton.
Sidney 3, Hancock 1
Katy DeShaw scored two goals to lead visiting Sidney to a Section Four Conference victory.
DeShaw opened the scoring five minutes in off a pass from Hannah Wood. Wood also finished with a goal for the Warriors.
Hancock’s Meghan Smith tied it 11 minutes later after receiving a pass from Alyssa Makowski.
DeShaw gave Sidney the lead for keeps with 25 minutes left in the second on an unassisted goal from 12 yards.
Hancock (2-10) will host Windsor on Friday for a continuance of their last game, which was postponed because of weather.
Deposit 2, Walton 0
Chloe Bergman and Kassi Cook scored for the host Lumberjacks, who a Section Four Conference game.
Emily Bartlett made 11 saves for Walton (3-9, 2-6), which will host Hancock on Thursday.