Over 19 relief appearances, Charlie Furbush owns a 4.42 ERA in 18 1/3 innings.
Tyler Clippard hasn't allowed a run in May.
Joaquin Arias has been one of baseball's worst hitters, slashing .205/.262/.205 through 43 plate appearances.
Jason Frasor has tallied a 3.65 ERA through 17 appearances in his first season for the Rangers.
Jeremy Horst has not carried over his success from 2012, posting a 5.09 ERA and 1.58 WHIP over 17 2/3 innings.
Adam Ottavino boasts a 2.01 ERA over 22 1/3 relief innings for the Rockies.
Jose Valverde worked a scoreless ninth inning against the Twins on Thursday, striking out two and earning his fifth save of the season.
Rick Porcello was chased by the Twins for five runs on 10 hits over five innings Thursday, but escaped with a no-decision when Detroit mounted a late comeback.