BC High senior Mike Vasil is regarded as one of the top pitching prospects in June’s Major League Baseball Draft. But on Saturday afternoon, it was his bat that helped propel the second-ranked Eagles to a pivotal nonleague win over visiting Newton North, 13-6, at Monan Park.

In his first game action since leaving last Monday’s start with an injury to his pitching arm, Vasil made his mark as the designated hitter. The 6-foot-4-inch lefthanded hitter launched a mammoth double, drove in three runs, and scored three times as BC High rolled past the fifth-ranked Tigers.

“Today, my mind-set was to sit fastball and drive in as many guys and move them around,’’ Vasil said. “I think our bats are really coming alive and everything’s looking up.’’

Vasil said that he expects to be back on the mound sooner than people thought. He said he visited a doctor and there is no ligament damage, only muscle fatigue.

So for the time being, the Virginia commit’s impact comes as the cleanup hitter in a deep lineup for the Eagles (5-2).

“Now it’s time for me to be a better teammate to everyone because I’m on the bench more often,’’ Vasil said. “And at the plate really focusing on getting on base.’’

Complementing Vasil in the offensive onslaught was sophomore Pat Roche, who had three hits and five RBIs hitting out of the No. 7 hole. All three of his run-scoring hits came with two outs.

“I kind of had a bad batting practice,’’ Roche said. “So I just thought about simplifying things. I thought my approach was good and it felt good to come through today.’’

Added Vasil, “He’s a young stud. He’s been huge for us and he’s turned it around. He’s motivated me.’’

Righthander John MacDonald earned the win, allowing two hits while striking out four.

The Eagles supplied him with run support early and often. After loading the bases with nobody out in the top of the first, Vasil grounded a ball to second that scored a run. Another run came home on a throwing error. Later in the inning, Roche lined a two-out single up the middle off starter Kenny Schechter to make it 4-0, BC High.

In the second, Vasil extended the lead to 6-1 when he launched a double off the right-field wall that came inches from being a homer. Roche added an RBI double in the fifth to score Vasil and make it 7-2. Two more runs scored in the inning on an error.

“When they made mistakes we hit the ball,’’ BC High coach Norm Walsh said. “Early on we were really focused and that was key. We’re in a good spot right now.’’

In the sixth, Roche continued his torrid afternoon with a two-run double off the replica Green Monster in left. He scored on a single to give BC High a 12-2 lead.

Seniors Cole Whitehouse and Dante Taylor combined to drive in five runs for the Tigers (3-3), who scored four runs in the seventh.

Rivers 3, Middlesex 2 — Sophomore Donald Sibolella had a walkoff hit that scored Billy Shea for the host Red Wings (2-4). Senior John Corrigan turned in a complete-game effort, striking out 10.

East Bridgewater 5, Cardinal Spellman 1 — Junior righthander Liam LeVangie tossed a complete-game shutout, allowing three hits with five strikeouts for the Vikings (5-1). He also scored the go-ahead run in the fourth inning.

Hamilton-Wenham 3, Triton 2 — Senior pitcher Jake Lanciani pitched in relief and scored on a ninth-inning walkoff for the Generals (6-2).

Waltham 6, Westford 2 — Sophomore Billy Sameski tossed two innings in relief to collect the win for the Ghosts (5-2).

Governor’s Academy 3, Roxbury Latin 2 — Kevin Lucey’s two-out RBI single in the top of the seventh put the Governors (5-2) on top for good.

Medford 9, Swampscott 3 — Senior Jack Fargo earned his third win of the season, tossing five innings while striking out nine for the Mustangs (6-1).

St. Sebastian’s 6, BB&N 1 — Junior Billy Seidl lost his perfect game bid in the top of the seventh but completed the game allowing only one hit and an earned run while striking out five. Classmate Drew Dorsey had a three-run homer to to lift the visiting Arrows (9-0).

Oliver Ames 11, Mansfield 9 — Senior Mitch Goulet finished 2 for 2 with a double and three runs to lift the host Tigers. Classmate Matt Muir scored three times as well and supplied an RBI.

Lynn Classical 4, Revere 0 — Junior Kyle Flannigan went the distance striking out five and scattering three hits while senior Sean Devin supplied a two-RBI single to lift the host Rams (3-5).

Catholic Memorial 3, Brookline 2 — Junior Pat Manning homered in the third inning and Anthony Marcano shut the door with a save to propel the No. 6 Knights (6-3) past the No. 7 Warriors (7-2).

St. Mary’s 6, Archbishop Williams 0 — Junior Bobby Alock recorded 14 strikeouts in a complete game to lift the Spartans (4-3) to their third consecutive win.

Somerville 3, Marblehead 2 — Senior Justin Shofield tossed a complete game, allowing two earned runs and striking out seven for the Highlanders (2-7).

Bridgewater-Raynham 7, Auburn 1 — Senior Dan Bordwin went the distance, with five strikeouts and four hits allowed while classmate Danny Taylor finished 2 for 3 with two runs scored and an RBI as the host Trojans (2-6) got their second straight win.

Groton 2, Nobles 0 — Junior Shane Kim tossed a no-hitter for the Zebras (2-4). Boys’ lacrosse

Southeastern 11, Upper Cape 8 — Junior Roy Moore led the Hawks (4-3) with four goals.

Duxbury 10, Billerica 4 — Senior Joe Gooley singlehandedly outscored the No. 7 Indians with five goals for the No. 4 Dragons (7-2).

Hingham 13, Summit (N.J.) 8 — Junior Will Kenney (three goals) and senior Jake Quilty (two) led the Harbormen (10-0).Softball

North Reading 13, Pentucket 8 — Senior Giuliana Peppe hit a grand slam as the Hornets won their sixth straight to start the season.

Case 13, New Bedford 1 — Freshman shortstop Riley Fitzgerald went 3 for 4 with five RBIs for the Cardinals (4-2).

Danvers 9, Everett 1 — Senior Erica Haibon went 3 for 4 with a solo home run for the Falcons (6-1).

Girls’ lacrosse

Cohasset 10, Wellesley 9 — Molly Greer (four goals) found the back of the net with 45.5 seconds left in overtime, capping a comeback from a 9-4 deficit for the top-ranked Skippers (7-1).

Oliver Ames 17, Bellingham 8 — Senior Chloe Kilkelly netted five goals to pace the host Tigers.

Greater New Bedford 15, Coyle & Cassidy 1 — Senior Beatriz Tavarez potted five goals to pace the host Bears. Freshman Kaitlyn Winterson added four of her own.