Boxberger has been more solid than spectacular, but he's managed to record 25 saves and his job does not appear to be under immediate threat. His 3.49 ERA is adequate and he's struck out a third of the batters he's faced, though his 11.7 percent walk rate (exactly in line with his career figure) gives some cause for concern. Some regression in his BABIP (which currently sits at .238) could cause the Diamondbacks to contemplate a change, though nothing appears imminent.
If a change does occur, Bradley represents the best of a strong stable of alternatives. He hasn't quite matched the dominance he showed in a high-leverage role last season, when he tossed 73 innings with a 1.73 ERA, but his 3.02 ERA this season remains quite solid and he's picked up three saves when Boxberger has been unavailable.
Hirano brings closing experience from his time in Japan the last five seasons, but he has been forced to settle for setup work in his first foray in the majors. Hirano doesn't offer premium velocity, but controls his pitches well and has excelled at generating groundballs, which has allowed him to emerge as a dependable seventh- and eighth-inning man for the Diamondbacks.
Deadline-day acquisition Ziegler brings an elite groundball rate (74 percent this season) and 105 career saves. He was the closer in Miami for the first two months of the year but lost the job after stumbling to a 7.87 ERA through his first 25 appearances. Since that point, his ERA sits at 0.69. He doesn't have the elite strikeout rates that most teams look for in a closer, but he could be the guy should the Diamondbacks prefer an experienced arm in the event that something happens to Boxberger.
We've included our analysis of the Arizona Diamondbacks' closer depth chart below, but our full analysis of every team is reserved for RotoWire subscribers. We follow the latest closer news every day so you can trust that you'll be getting the best possible information. Once you start using our closer grid, you'll wonder how you ever chased saves without it.
Subscribe To RotoWire Now