BANGOR – Sam Merrill stroked a two-run single to spark a three-run first inning Wednesday as fifth-seeded Mount Desert Island earned a 3-1 Class B baseball quarterfinal win over No. 4 John Bapst at the Winkin Baseball Complex.

Marcus Maffucci and Matt Grover each singled for the Trojans behind Andy Pooler, who fired a three-hitter.

Cody Andrews, Nick Hubbard and Hunter Umphrey singled for the Crusaders to back Mike Tardiff, who scattered four hits in defeat.

MDI (10-7) 300 000 0 – 3 4 0

John Bapst (10-7) 000 010 0 – 1 3 1

Pooler and Lyons; Tardiff and Yates

Class D

Shead 7, Machias 4

At Eastport, Josh Francis knocked an RBI double while Derek Maloney hit an RBI single to lead the second-seeded Tigers to the win.

Francis added a single and Maloney a double and Aaron Sullivan had two singles and a triple for Shead.

Alan Austin hit two RBI doubles for the No. 10 Bulldogs and Chase Ross notched two singles.

Machias (9-7) 001 003 0 – 4 7 2

Shead (13-0) 400 210 x – 7 8 4

Austin and Getchell; Maloney, Sullivan (4), Francis (7) and Bowen

Class C

George Stevens 8, Houlton 0

At Blue Hill, Ross Gallagher singled twice and drove in three runs as top-seeded George Stevens Academy shut out No. 8 Houlton in quarterfinal action.

Collin Henry pitched a four-hitter, striking out six and walking one. Blake Wessel singled and doubled to bring in one run. Dan Larry had two singles with an RBI and Josh Astbury had a single and an RBI for the Eagles.

Ian Pasquarelli singled twice for the Shiretowners.

Houlton (10-6) 000 000 0 – 0 4 0

George Stevens (13-4) 221 210 x – 8 12 0

Lewis, Cleary (4), Caron (6) and Austin; Henry and Marks

WM Class D

Greenville 7, Forest Hills 2

At Jackman, Eric Driscoll tripled and doubled, driving in two runs, as the fifth-seeded Lakers defeated fourth-seeded Forest Hills.

David Aucoin added two singles and an RBI for Greenville.

Zach Achey singled three times for the Tigers, while Steven Achey had two singles and an RBI.

Greenville (8-5) 200 050 0 – 7 8 3

Forest Hills (7-6) 010 000 1 – 2 7 3

Jardine and Aucoin; Mulhall and Holbrook

Softball

Class C

Sumner 6, Calais 4

At Calais, Jody Pinkham had an RBI single, then Kayla Higgins had an RBI double in the top of the 10th inning to break a 4-4 tie as the eighth-seeded Tigers upset top-ranked and previously unbeaten Calais.

Pinkham finished with two singles and an RBI. Nicole Leach added two singles, while Jessica Daley struck out 13 and walked two.

Steph Perry singled twice and brought in one run for the Blue Devils. Chrissy Driscoll and Danielle O’Brien each had two singles.

Sumner (11-7) 000 301 000 2 – 6 7 1

Calais (15-1) 110 200 000 0 – 4 9 6

Daley and Pinkham; Perry and O’Brien