Mitch Garver's first career grand slam was wasted by the bullpen.
The Twins allowed five homers in a doubleheader split.
Arráez's two-run double led the Twins to an 8-7 victory.
Kenta Maeda's solid outing on the mound gave the Twins a 4-2 victory.
Buxton missed 39 games with a hip strain.
The Twins turned a triple play and the bullpen did the rest.
The blasts helped the Twins snap a four-game losing streak on Saturday.
The Twins picked up their 16th straight victory over Baltimore.
The Twins have won five of their past six games with Wednesday's win over Baltimore.
The 5-4 victory over the A's snapped a five-game losing streak.
The Twins have lost 12 of their past 14 games.
Alex Colome's debut didn't go well as the Twins lost 6-5 in extra innings.
The Twins are part of baseball's problem in avoiding the hot stove.