Carlos Estévez exits Omaha rehab early with shoulder discomfort after velocity dip

Carlos Estévez’s rehab outing in Omaha barely settled in before the warning signs returned. His fastball was down again, a trainer visited him after the second out, and he left after just three batters with right shoulder discomfort, a brief stop that now pushes the Royals back into uncertainty about their ninth-inning plan.

The setback matters because Kansas City was using this outing to see which Estévez would come back. Before he even threw a pitch for Triple-A Omaha on May 6, the velocity questions were already impossible to ignore. His fastball averaged 95.9 mph in 2025, but it was below 90 mph in spring training and sat at 91.2 mph in his season debut on March 28. That first appearance also went badly: he threw 27 pitches, recorded one out and allowed a walk-off grand slam to the Atlanta Braves, then was hit on his left foot by a comebacker.

That foot problem had kept him on the injured list after the Royals placed him there on April 1, retroactive to March 29. He had completed three live bullpen sessions in Arizona before the rehab assignment, but the short trip through Omaha offered little reassurance. Instead, the club now has to wait for another evaluation to determine the severity of the shoulder issue and what comes next for one of the most important arms on its roster.

Estévez’s importance goes well beyond one rehab line score. He was the Royals’ closer in 2025, led the majors with 42 saves and made the All-Star team in his first season in Kansas City. That total tied Joakim Soria for seventh-most in Royals history and left him five shy of Greg Holland’s club record of 47. Those numbers help explain why a two-out rehab exit in Omaha carries such immediate weight in Kansas City.

For now, Lucas Erceg has been handling the ninth inning while Estévez is out, and the bullpen picture remains unsettled. If the shoulder discomfort lingers or the velocity does not rebound, the Royals may have to keep leaning on Erceg longer than planned, with the late-game hierarchy still very much in flux.