Busch went 2-for-4 with a double, an RBI and a run scored in Sunday's 7-3 win over the Royals.
Busch entered as a pinch-hitter for Christopher Morel in the fourth inning, with the latter getting traded to the Rays mid-game as part of the package for Isaac Paredes. Busch then proceeded to snap out of an 0-for-14 slump with the multi-hit afternoon. Paredes figures to replace Morel at third for the Cubs, so Busch should stick as the team's primary first baseman following his interrupted day of rest Sunday.