Fantasy baseball managers should act fast on the waiver wire as Ivan Herrera’s hot start and five-category potential make him a sneaky, high-upside addition at the catcher position.

St. Louis Cardinals' Iván Herrera, center, celebrates with Brendan Donovan after hitting a 2-run home run during the sixth inning of a baseball game against the Los Angeles Angels, Wednesday ...

Fantasy baseball managers should act fast on the waiver wire as Ivan Herrera’s hot start and five-category potential make him a sneaky, high-upside addition at the catcher position.