Young and Michael Arroyo were both in the lineup Saturday against southpaw Gage Jump. Young has retained a starting role at second base since Arroyo was called up. Through 11 games in September, Young is 13-for-39 (.333) with eight RBI. He's batting .250 with a .706 OPS, 17 homers, 65 RBI, 71 runs scored, 18 doubles, four triples and three stolen bases across 148 contests this season.

Young had started each of the Mariners' last nine games, but after producing a poor .188/.333/.250 slash line during that stretch, he'll hit the bench Sunday. The Mariners called up one of their top prospects in Michael Arroyo from Triple-A Tacoma on Sunday, and he'll immediately enter the lineup in place of Young, starting at second base against left-hander Gage Jump. The right-handed-hitting Arroyo could end up settling into a platoon at the keystone with Young, who is batting .218/.278/.294 (69 wRC+) over 187 plate appearances versus lefties.