The Anchorage Glacier Pilots defeated the Peninsula Oilers 8-5 on Monday in Alaska Baseball League play at Coral Seymour Memorial Park in Kenai.
After dropping the first two games of the series, the Pilots won the last three to finish the season series with the Oilers at 5-5.
Anchorage also moved into first place with the victory. The Glacier Pilots lead the league at 20-15, while the Anchorage Bucs (20-16) and the Mat-Su Miners (19-15) are a half game back.
The Oilers, at 14-19, are five games back and the Chugiak-Eagle River Chinooks, at 13-21, are 6.5 games back.
The Chinooks and the Oilers will compete for the fourth spot in the Top of the World Series playoffs in a series starting Wednesday at Seymour Park.
Five games are currently scheduled, though the teams have a rained out game from earlier in the season that could be made up if needed. The games are Wednesday, Thursday, Friday and Saturday at 6 p.m. and Sunday at 2 p.m.
Those five games will complete the regular season and close the season at Seymour Park.
The Oilers banged out 14 hits Monday, but the difference in the game was an ugly fourth inning in which the Pilots scored five unearned runs.
Peninsula came into the inning trailing 1-0, but three errors, four walks and two hits later, the Pilots were in command of the game.
The worst of the inning came when Troy Harding hit a grounder to shortstop and an error by the shortstop and a throwing error by the catcher allowed Harding plus two other runners to score.
Ryne Palmer took the hard-luck loss for the Oilers, giving up six unearned runs on five hits.
The Oilers did battle back after the top of the fourth, scoring two runs in the bottom of the fourth, two in the seventh and two in the eighth to cut the gap to 6-5. Sam Silversmith had two innings of scoreless relief for the Oilers.
The Pilots got some breathing room in the ninth when Andrew Lamb had a two-run triple off Ty Thomas.
For the Oilers, Michael Elko was 3 for 4 with an RBI, Ryson Ujimori was 3 for 4 with an RBI, Leighton Helfrick was 2 for 5, William Grimm was 2 for 4 with an RBI, and Theo Forshey and Owen McElfatrick had a hit and an RBI.