The Royals released Topa on Sunday.
Topa allowed just one earned run with a 9:5 K:BB over 12.2 innings with Triple-A after inking a minor-league deal with the Royals in July, so he might have exercised an opt-out clause in his contract. The veteran reliever logged an 8.05 ERA and 12:11 K:BB over 19 innings earlier this season with the Twins and is now on the lookout for a new organization.