Orlando Ribalta

Washington Nationals relief pitcher Orlando Ribalta has been very effective as a setup man for the Nationals this season and could be a key name to watch if Clayton Beeter stumbles as closer. Ribalta has posted an impressive 1.80 ERA with a 3.40 FIP in his 20 appearances this season, earning two saves and four holds over 20 innings. He only has 14 strikeouts, so he isn't an elite strikeout producer, but he has limited his walks and only allowed a .171 batting average against him. Ribalta isn't a must-add until his role changes in standard-sized leagues, but he's definitely pitching effectively enough to watch closely. In shallower leagues where bullpen arms are stretched thin, he could be a nice speculative pickup from the waiver wire if you're trying to get ahead of the ever-shifting bullpen roles in Washington.