Bringing Tyler Clippard into the fold could have been taken as a challenge to Ziegler's gig, but the incumbent will remain in the closing role once Opening Day rolls around. In 2015, Ziegler replaced Addison Reed in May and proceeded to complete 30 saves, which he supplemented with a crisp 1.85 ERA and 0.956 WHIP. However, Ziegler's lack of heat doesn't equate to many strikeouts, as evidenced by 4.76 K/9 last season.
While Ziegler does not have the swing-and-miss stuff of a prototypical closer, his ability to keep the ball on the ground and success in the closer role a year ago will likely keep him in the ninth inning to start the 2016 campaign. Clippard's signing bolsters the team's back-end depth for now and gives the Diamondbacks a quality fallback option should Ziegler's ERA return closer to his 2014 mark.
Oliver split the 2015 campaign between the Rays and Orioles organizations, performing relatively well for the teams' respective Triple-A affiliates. It appears the Orioles were impressed enough to offer Oliver another minors deal that includes an invitation to spring training, where he'll face an uphill battle to earn an Opening Day roster spot.
Clippard has been one of the better relievers over the past few years, most recently being an integral part of the Mets' World Series run with his 2.92 ERA and 1.13 WHIP. That being said, the 30-year-old is pretty reliant on the flyball to get outs, which may not translate very well in a hitter's park like Chase Field. Whether or not his stuff suits the park, though, there's a good chance that Clipart could become the closer in Arizona, which bolsters their bullpen and makes him a very viable fantasy option once more.
At age-41, Nathan is recovering from his second career Tommy John surgery. Most likely, teams interested in acquiring his services will be eyeing a return after the All-Star break, as it's reasonable to think that he'll need more than the typical minimum 12-month recovery window to get back on the mound in game situations after having the surgery in late April.
Stammen sat out for most of 2015 with a forearm injury, which led to the Nationals non-tendering the 31-year-old. That being said, he has had some decent numbers out of the bullpen during his career, posting a 2.93 ERA and 1.25 WHIP with nearly a strikeout per inning from 2012 through 2014. If he can get back to full health, Stammen could prove to be a nice under-the-radar pickup for Cleveland.
The Cubs have been trying to get Johnson to develop a third pitch ever since he was drafted in 2012, and he finally looks like he has one to go with fastball and slider. He's already one of the better pitching prospect in the system, but his rise to the majors has been stalled a bit. Don't be surprised to hear his name a bit more in 2016.
This came a day after the Padres agreed to terms with Rodney to presumably get the first crack at closing for them this year. In three games this month for the Dominican Republic he has allowed three runs (one earned) and struck out five. There is no reason to believe the injury is anything serious, but it's worth noting as spring training approaches.
While arbitration trials aren't the best way to get on the right foot with a new team, Chavez will bring a solid back-of-the-rotation presence to a staff that needs starting depth. The $4 million salary is a $1.85 million raise from last season.
Jenkins had been a steady performer out of the bullpen before 2015, averaging a 3.25 ERA and 32.1 innings per year in the three seasons prior. However, a brutal spring and mediocre results last season made the out-of-options reliever expendable. If he manages to clear waivers, he'll likely go back to Triple-A Buffalo.