Miguel Rojas hit a two-run homer to give the Los Angeles Dodgers the lead and they went on to defeat the host Seattle Mariners 6-3 in the opener of a three-game interleague series.
J.D. Martinez also drove in two runs and James Outman added a solo shot in the ninth inning for the Dodgers (89-57), who reduced their magic number to two to clinch the National West League title for the 10th time in the past 11 seasons.
Eugenio Suarez homered for the Mariners (81-66), who had a two-game winning streak snapped and missed a chance to make up ground in the American League West after both Houston and Texas lost.
Seattle remained a half-game ahead of Toronto for the AL’s third and final wild-card playoff berth. Dodgers rookie Bobby Miller (10-3) went 5 2/3 innings to earn the victory.