Pinch-hitter Guillermo Heredia was the hero in the bottom of the ninth inning, but former Oregon State pitcher Sam Gaviglio provided some early heroics for the Seattle Mariners on Thursday.
Heredia's single in the bottom of the ninth inning plated the winning run as Seattle beat the Chicago White Sox 5-4 at Safeco Field.
Taylor Motter had singled to start the inning, and Jarrod Dyson replaced him on base with a fielder's choice bunt. He advanced to second on a groundout and, after an intentional walk to Jean Segura, Heredia hit for Ben Gamel and stroked the game-winning hit off pitcher Dan Jennings.
Gaviglio pitched five innings of scoreless ball, allowing only three hits and striking out two and walking one.
The Mariners led 4-0 on a solo homer by Jarrod Dyson and Segura's three-run blast in the fifth inning.
The White Sox went homer crazy in the seventh and eighth innings to tie the game.
Matt Davidson hit a two-run shot off Casey Lawrence in the seventh inning, and Todd Frazier and Tim Anderson hit back-to-back homers with two outs in the eighth inning off Dan Altavilla.
That set up the drama of the bottom of the ninth inning.
Dyson had two hits and three runs scored. Segura has now hit in 17 consecutive games. Anderson went 3-for-4 for the White Sox.
The Mariners (20-22) and White Sox (17-22) play again at 7 p.m. Friday, with Ariel Miranda (3-2, 4.79) pitching for Seattle opposite Jose Quintana (2-5, 4.38).