Left biceps tendinitis. Has made four scoreless rehab appearances (6 K, 1 BB across 4 IP) but manager Joe Espada confirmed he needs five more before activation. Return target: late May/early June at the earliest.

Transferred from 15-day to 60-day IL. Biceps tendinitis rehab has been slower than expected. The 60-day clock is retroactive, making him eligible to return in late May. Hasn't faced hitters yet. Peter Lambert selected to fill the roster spot.

Per Closer Monkey, return is now 'weeks rather than days' — the biceps tendinitis rehab is moving slower than initially hoped. Enyel De Los Santos picked up his second save Wednesday while Bryan Abreu had 1.1 scoreless IP with 2 K.

Per Rotowire, Hader is "approximately one month out" from returning — he'll begin facing hitters next week per manager Joe Espada. The biceps tendinitis from spring has slowed his ramp. Bryan Abreu remains the in-house option but has been disastrous.