Adam Walker is not having much trouble with the NPB learning curve — or NPB fastballs, sliders or anything else lately.

Walker hit a change-up out of the park against the Chiba Lotte Marines on Sunday, capping a week during which he was among the hottest hitters in Japan.

Walker is in his first NPB season, having joined the Yomiuri Giants on the heels of back-to-back MVP campaigns with the Milwaukee Milkmen in the American Association of Professional Baseball.