The Cubs selected Adam's contract Sunday from their alternate training site, Patrick Mooney of The Athletic reports.
Adam will assume the 40-man roster spot of pitcher Jharel Cotton, who was designated for assignment. The 29-year-old made 23 appearances out of the Toronto bullpen in 2019, posting a 2.91 ERA, 1.15 WHIP and 18:10 K:BB in 21.2 innings.