Arozarena is starting in left field and batting second in Saturday's game against the White Sox.
Arozarena will make his first appearance for the Mariners after being traded from the Rays early Friday morning. For the season, he's slashing .211/.318/.394 with 15 home runs, 37 RBI and 16 stolen bases across 409 plate appearances, though for July he holds a .949 OPS across 73 plate appearances. He'll face off against White Sox right-hander Erick Fedde.