Chapman went 2-for-5 with a home run, two runs and three RBI on Wednesday against the Mariners.
The slick-fielding third baseman also went 3-for-3 and reached base five times in Sunday's exhibition in Japan, so he has taken to this trip quite well. He underwent a minor shoulder surgery back in December but recovered quickly and already appears to be as dialed in as any A's hitter at the plate.