Andruw Monasterio launched a 428-foot, two-run home run in the top of the 10th inning to lift the Boston Red Sox to a 4-2 extra-inning victory over the Athletics on Wednesday night at Sutter Health Park in West Sacramento.
The blast off Athletics reliever Jose Suarez scored ghost runner Romy Gonzalez, securing Boston's 19th victory in its last 22 games and improving its record to 56-51.
Reliever Greg Weissert struck out two batters in a scoreless bottom of the 10th to earn the save, capping a dominant performance by the Boston bullpen.
The Sox relievers, who boast a major league-best 3.03 ERA, threw four scoreless innings with five strikeouts, backed by efforts from Tyron Guerrero, Justin Slaten, Garrett Whitlock, and Aroldis Chapman.
Chapman escaped a high-leverage jam in the bottom of the ninth after Lawrence Butler led off with a double off the wall and advanced to third on a sacrifice bunt.
Chapman struck out Jacob Wilson and Jeff McNeil to force extra innings.
Starting pitcher Patrick Sandoval gave Boston five solid innings in his fourth start since returning from Tommy John surgery.
The veteran left-hander allowed two runs on five hits and two walks while striking out a season-high seven batters across 92 pitches.
Both Athletics runs came via solo homers, with Jonah Heim opening the scoring in the second inning and Butler hitting a solo shot in the fifth.
Oakland starter Jacob Lopez matched the effort, allowing two runs on seven hits over 5 1/3 innings with eight strikeouts.
Boston responded with a solo home run by Jahmai Jones in the fifth inning and an RBI single from Sacramento native Nick Sogard in the sixth to tie the game at 2-2.
Sogard was recalled from Triple-A Worcester earlier in the day to replace Curtis Mead, who suffered a fractured wrist on Monday.
In the first inning, Athletics slugger Nick Kurtz was forced to exit after being struck on the left forearm by a 95 mph sinker from Sandoval, marking the second time in the series a player was injured by a pitch.
