Rays demote Matz to bullpen after velocity, ERA collapse in 2026 season

Performance Regression and Velocity Concerns

Matz, who signed a two-year, $15 million contract with the Rays this past December, struggled to regain his form after a stint on the injured list for elbow inflammation in mid-May. While he initially posted a 3.86 ERA through his first seven appearances, his performance deteriorated rapidly upon his return. According to MLB.com, the lefty gave up six runs in three innings against the Orioles on May 27, followed by a dismal outing against the Tigers where he allowed five runs while recording only five outs.

The technical data reflects this decline. MLB Trade Rumors reports that Matz’s Stuff+ rating slipped from 98 to 91, and his swinging-strike rate dropped by more than 3% since his return from the IL. Perhaps most concerning to the coaching staff was a dip in fastball velocity, which fell from a season average of 93.3 mph to 92 mph during his most recent appearance against Detroit.

The decline in velocity has been compounded by a lack of command within the strike zone. During his last two starts, Matz saw his walk rate spike to 4.8 per nine innings, a significant deviation from his career average. Advanced metrics indicate that opponents are chasing his off-speed pitches 12% less frequently than they were during his productive April stretch, suggesting that hitters are no longer respecting his secondary offerings due to the diminished threat of his fastball. This lack of sequencing efficiency has left Matz prone to hard contact, with an exit velocity against his sinker jumping from 87 mph to 91.2 mph over his last three appearances.

Managerial Outlook on the Bullpen Transition

Despite the demotion, the organization maintains that the move is not a permanent end to Matz’s time in the rotation. Kevin Cash emphasized the temporary nature of the shift, noting that the team intends to use the bullpen stint as a reset button for the veteran pitcher.

“He’s done this before. It’s not by any stretch permanent. He will pitch out of the ‘pen for the foreseeable future, and then we will reassess if we can get him freshened back up.”

Manager Kevin Cash, via MLB.com

Matz himself has expressed professional alignment with the decision. While he acknowledged his desire to be a starter, he cited the necessity of contributing to team wins. “They’re looking out for me. They’re looking out for the team — ‘What’s the best interest of everybody in the situation?’ And I agree,” Matz said. He drew a parallel to his 2023 season with the Cardinals, where a similar mid-season transition to the bullpen eventually led to a productive return to the rotation, during which he went 4-0 with a 1.86 ERA in seven starts.

Rays pitching coach Kyle Snyder noted that the transition will allow the training staff to monitor Matz’s elbow recovery in a lower-stress environment. By limiting his appearances to shorter bursts, the team hopes to eliminate the “dead arm” phase that often follows a return from soft-tissue inflammation. The coaching staff has scheduled a series of bullpen sessions designed to re-sync his mechanics, specifically focusing on his arm slot, which had begun to drop during his final start in Detroit. This mechanical correction is viewed as the primary prerequisite for his eventual return to the starting five.

Rotation Adjustments and Future Candidates

The Rays are moving quickly to fill the vacancy created by Matz’s move. Mason Englert is expected to step into a bulk-innings role, potentially serving as a starter or working behind an opener. CBS Sports reports that Englert is the primary candidate to take over the rotation spot, though Joe Boyle remains an option for the future given his prior starting experience with the club this season.

The team’s long-term strategy remains focused on workload management. With pitchers like Shane McClanahan and Drew Rasmussen carrying extensive injury histories, the Rays may eventually pivot to a six-man rotation to preserve arm health. For now, however, the immediate focus is stabilizing the rotation with Englert, who recently covered five innings in a relief appearance against the Orioles. Matz is expected to be available for the Rays in a relief capacity for the remainder of their series in Miami.

This roster shuffle comes at a critical juncture for Tampa Bay, as they currently sit 3.5 games back of the division lead in the American League East. With the trade deadline approaching in late July, the front office is evaluating whether internal options like Englert and Boyle can provide the necessary stability to keep the team in the hunt for a Wild Card spot. The Rays’ front office has signaled that they will be aggressive in the market should the current rotation continue to yield high run totals, but for the next 10 days, the priority is evaluating if Matz can regain his velocity in high-leverage relief situations. The team is scheduled to play a three-game set against the New York Yankees starting on June 12, a series that will likely determine the immediate future of the Rays’ pitching depth chart.

Matz’s contract status adds a layer of complexity to this decision; he is under team control through the 2027 season, making his long-term health a priority for the organization’s payroll and competitive window. If the bullpen transition does not yield the desired mechanical results by the All-Star break, the Rays may be forced to look for external starting pitching reinforcements. For now, Matz remains on the active roster, and the team’s medical staff has confirmed that there have been no new setbacks regarding his elbow, clearing him for full participation in all bullpen activities starting Sunday.