Bolanos (ribs) was added to the Royals' 30-man roster Thursday, Jeffrey Flanagan of MLB.com reports.
Bolanos is set to break camp with the Royals after being acquired by the team earlier in the month. The right-hander struggled to a 5.95 ERA and 1.47 WHIP across 19.2 innings with the Padres in 2019, so he'll likely be limited to lower-leverage work with Kansas City.