The Diamondbacks announced that closer Shelby Miller has gone on the 15-day injured list, retroactive to July 6, with a forearm strain. Arizona recalled rookie righty Juan Morillo to step into the vacated bullpen spot.
It’s the latest hit to the D-Backs bullpen, one that seems likely to have ramifications for the trade market. The Snakes have yet to provide a timetable for Miller’s return, but he’ll be out until at least July 21. A forearm injury certainly threatens to sideline him beyond a minimal stint. There’s not a ton of leeway for him to make it back prior to the July 31 deadline.
Arizona kicks off a pivotal four-game series in San Diego this evening. They sport a 44-46 record and sit 4.5 games back of the National League’s last Wild Card spot. The Padres currently occupy the final playoff position; each of the Giants, Cardinals and Reds sit between San Diego and Arizona. The D-Backs would nearly close the gap with the Friars if they manage a sweep. If they lose the series (or get swept themselves), they could fall seven or eight games back with the All-Star Break looming. The next few days may be crucial for determining their deadline trajectory.
In either case, a long-term injury for Miller would be significant. GM Mike Hazen said last week that the Snakes would prioritize adding to the bullpen if they’re in position to buy. That comes as no surprise, as Miller had been thrust into the ninth inning by season-ending injuries to Justin Martinez and A.J. Puk. While the veteran righty has pitched well, Hazen noted that the whole bullpen would benefit from the addition of a late-game weapon who could free skipper Torey Lovullo to use Miller a little earlier in games. If Miller is out beyond the deadline, that only becomes more pressing.
If the Diamondbacks don’t play their way into buying, a healthy Miller would be one of their clearest trade candidates. He’s an impending free agent playing on a modest salary after signing an offseason minor league deal. He’d fit into the budget for every team and would be an upgrade to any bullpen. The 34-year-old carries a 1.98 earned run average through 36 innings. He has fanned 28% of opposing hitters against a 7.7% walk rate. Miller has recorded 10 saves — he entered the season with three career saves — and another eight holds while getting whiffs on 15% of his offerings.
Miller is one of the top rental relievers who may be available. It’s possible that still comes to pass if he returns within three weeks, but a forearm injury has the potential to significantly reduce his trade value. While he would be eligible to be traded even if he’s on the injured list come July 31, the D-Backs would have a tough time getting much in return if he doesn’t demonstrate he’s healthy.