Williamson Lands on IL With Shoulder Fatigue, Leaving Reds Rotation in Crisis Mode

Brandon Williamson is heading to the 15-day IL with left shoulder fatigue, the Reds confirmed Thursday, one day after he lasted just three innings and surrendered four runs against the Rockies in a 13-2 blowout. An MRI came back structurally clean, and manager Terry Francona noted that team physician Dr. Tim Kremchek administered a cortisone injection with a shoulder program to follow — but there is no return timeline, and with Williamson's injury history, that ambiguity is doing a lot of heavy lifting.

The context here is brutal for Cincinnati. Hunter Greene is already sidelined with right elbow trouble, Nick Lodolo is working back from a left index finger blister, and now Williamson — who posted arguably the best spring numbers among all Reds starters — is shelved after putting up a 6.11 ERA across six starts. What looked like an opportunistic young rotation built around Chase Burns and Rhett Lowder is now running on fumes. Williamson missed five months in 2024 with a left shoulder strain, then returned and tore his UCL four games later, costing him all of 2025 to Tommy John recovery. That history is precisely why the Reds won't rush this, structurally clean MRI or not.

For Monday's start at Wrigley against the Cubs, Francona admitted the club is still sorting through its options. Lodolo is on a rehab schedule and unavailable. The most likely candidates are Jose Franco, recently recalled as bullpen depth but a starter by trade, and Chase Petty — Cincinnati's No. 7 prospect — who threw 62 pitches across just 2⅓ innings at Triple-A Louisville on Wednesday. Neither option inspires confidence as a plug-and-play MLB starter, particularly in a road environment against a Cubs lineup that's been hitting.

From a team-total and run-environment standpoint, this is a significant market signal. The Reds were already a team to target on the over when Greene or Lodolo were scratched — Cincinnati's rotation ERA has been one of the worst in the NL, and what replaces Williamson on Monday figures to be a short-leash spot start from an inexperienced arm. The Cubs at Wrigley, even with wind factored in, become a live over play. More broadly, the Reds' team totals deserve aggressive scrutiny for the foreseeable future: opposing offenses are facing a rotation that is, right now, Burns, Lowder, and a revolving door. Back-of-rotation arms and fresh call-ups surrendering early runs will push game totals north consistently.

The longer play is fading Cincinnati on the moneyline in any matchup where they're forced to deploy Petty, Franco, or another emergency option — especially on the road. The Reds' -1.5 run line also becomes near-untouchable as a buy when lineup construction remains this fragile. Until Greene or Lodolo slots back in and provides genuine rotation depth, Cincinnati's pitching math simply doesn't work at most price points the market will offer.