PORTLAND – Defending champion Andrews Post of Portland emerged as the lone undefeated team through three days of the American Legion baseball state tournament with a 8-1 winners’ bracket victory over Brewer at Hadlock Field on Monday night.

Lefthander Ian Boyle struck out 13 and scattered seven hits in a complete-game pitching effort, and Devin McNeill, Scott Nappi and John Moran – the 7-8-9 hitters in the Andrews order – combined for seven hits, four RBIs, and four runs scored as the Zone 4 champs spotted Brewer a 1-0 first-inning lead before steadily pulling away.

Andrews has now outscored its first three tourney foes – Gardiner, Bangor and Brewer – by a combined 28-2.

Zone 1 champion Brewer (25-4) faces a 4 p.m. elimination game today against Zone 2 winner Monmouth (22-3). Monmouth ended Bangor’s tourney run earlier Monday by besting the Comrades 13-3 in a game that ended in the eighth inning under the 10-run rule.

Andrews (25-0) will face Zone 4 runner-up Coastal Athletics of South Portland at 7 p.m. Coastal Athletics (19-8-1) remained alive by scoring a run in the bottom of the ninth to eliminate Zone 2 runner-up Gardiner 4-3 in Monday’s second game.

Brewer reached Boyle for a two-out run in the first. McAvoy rocketed a double to left that stayed in the park only because it bounced off the Maine Monster, Hadlock’s replica of the Green Monster at Boston’s Fenway Park. McAvoy was balked to third and scored when Joe Robicheau singled to left.

Andrews took the lead in the third, scoring two runs after two were out. John Moran lined a single to left to end a string of nine straight batters retired by Brewer righthander Evan Economy, and he scored when John O’Brion drove a triple to right-center. O’Brion scored the go-ahead run on a passed ball.

Andrews got Brewer’s help in pushing its lead to 3-1 in the fifth. McNeill hit an infield single to the shortstop hole and took second on a throwing error. After Nappi reached on a third-strike wild pitch, Moran hit an RBI single up the middle.

Two-out RBI singles by McNeill and Nappi in the sixth made it 5-1, and Joe Fessenden hit a sacrifice fly in the seventh to stretch the Andrews lead to five runs.

Robicheau had a double and single for Brewer, while Brad Brown and Eddie Robbins each singled twice.

Monmouth scored 12 runs in its final three at-bats against Bangor. The Zone 2 champs hit five triples overall, three during a six-run sixth inning that gave them the lead.

“It seems like the ball just carries here, everybody says that,” said Monmouth cleanup hitter Mike Eaton, who had one of the triples and finished with four RBIs. “I think we had only three triples during the season, but now it’s just triple after triple after triple. We don’t know how we do it. The ball just carries, and we run.”

Catcher Tavis Hasenfus added a triple and two infield hits while stealing three bases and scoring three runs for Monmouth.

Zone 1 runnerup Bangor was hurt by five errors, having three runners picked off, and stranding 13 other baserunners – eight in scoring position.

Monmouth starter Chris Ellis was shaky at the outset, walking four batters in the first inning alone, but Bangor couldn’t capitalize. The Comrades managed just one run in the inning as Kyle Vanidestine hit a leadoff double and scored on a stolen base and a throwing error, but Bangor left the bases loaded.

Ellis helped himself by picking off Bangor runners in the first, second, and sixth innings, all of which served to dash Bangor rally hopes.

Bangor scored again in the second on a triple by Tom Crews and an RBI double by Vanidestine.

Monmouth reached Bangor starter Ian Edwards for an unearned run in the third with Ethan Guerrette hitting a leadoff single, moving to third on an error, and scoring on a comebacker to the mound by Eaton.

Bangor scored its final run in the fifth on an RBI single by Anthony DeRosa, but the lead was just 3-1 and the combination of missed opportunities and defensive lapses left room for Monmouth to come back.

“When you get to this point, playing the level of teams that are here, you can’t leave the bases loaded, you can’t have guys in scoring position with one or no outs and not get them in,” said Bangor coach Fred Lower. “You might get away with it once in a game, but when it happens in two or three innings, it’s going to come back and get you.”

Gallant replaced Edwards on the mound in the fourth, primarily to stabilize the Bangor defense by moving Edwards back to shortstop.

Gallant, who hadn’t played baseball in more than a week while he participated in an AAU national basketball tournament in Florida, started strong – facing just six batters in his first two innings.

But Monmouth caught up to Gallant and fellow righthander Neal Russell in the sixth, sending nine batters to the plate to score six runs for a 7-3 lead. Triples by Hasenfus, Justin Denbow, and pinch hitter Josh Jillson and a two-run single by Guerrette highlighted the rally, which also was aided by two Bangor errors.

Monmouth scored three more runs in the seventh and ended the game in the eighth when Eaton hit a two-run triple and scored on a one-out single by Eaton.

Bangor (22-8) 110 010 00 – 3 8 5

Monmouth (22-3) 001 006 33 – 13 12 2

Edwards, Gallant (4), Russell (6) and Webb; Ellis, Dwyer (7) and Hasenfus

Brewer (25-4) 100 000 000 – 1 7 1

Andrews (25-0) 002 012 12x – 8 12 0

Economy, Higgins (8) and Robicheau; Boyle and Nealley