2014 Outlook: Acquired from the Baltimore Orioles in July, Strop was a sensation for the Chicago Cubs last season, posting a 2.83 ERA, 0.94 WHIP and 14 holds in 37 appearances for his new team, fueled by a 7.7 percent walk rate that was a substantial improvement upon his 13.4 percent number up to that point in his career. He put himself firmly in contention for a future closer role, though the Cubs signed successful 2013 closer Jose Veras as a stopgap, albeit perhaps for the early stages of 2014. Strop should begin 2014 as Veras' primary setup man and handcuff, and while his WHIP is a tad risky, he should be of service helping your ERA/WHIP/K's while filling the holds column.
2014 Outlook: As far as major league relievers go, Russell is serviceable, at best, with a strikeout and walk rate both a bit worse than league average. With respect to fantasy, serviceable has no value.
2014 Outlook: Villanueva has made a career out of pitching very well in relief and then getting exposed as a starter. His career ERA out of the bullpen is 3.69 compared to 4.73 as a starter. He's slated to serve as a swingman again this season. If he settles into a bullpen role, he can serve as an emergency fill-in for deep leagues.