Cincinnati Reds Push Rhett Lowder Toward July Return After Rehab Pitch

On May 27, 2026, left‑handed prospect Rhett Lowder took the mound at Citi Field for a 45‑pitch simulated game, the first public glimpse of his arm after a right‑shoulder strain that sidelined him in early April. The 24‑year‑old’s outing was more than a formality; it was a data‑rich test designed by the Reds’ medical and analytics staff to gauge arm strength, command, and spin characteristics before he re‑enters live competition.

Lowder’s fastball sat at an average 92 mph, a full three ticks higher than the 89 mph he recorded in his last major‑league start on March 30. His curveball displayed a tight spin axis and a spin rate of 2,400 rpm, while his changeup touched 84 mph with a consistent arm slot that kept hitters off‑balance. He struck out three batters and walked none, posting a 6.0 K/9 rate in the simulated environment—an encouraging sign that his command, which dipped to a 2.9 BB/9 in the first half of the 2024 season, is returning to pre‑injury levels.

Why the Reds Care About Lowder’s Timeline

The Cincinnati Reds entered the 2026 campaign with a 73‑71 record, trailing the NL Central leader St. Louis Cardinals by five games. Their staff pitched a 4.38 ERA over the past 12 starts, the third‑worst mark in the division and well above the league average of 4.12. The rotation’s two left‑handed arms—veteran Nick Lodolo and rookie Tyler Mahle—have shouldered most of the left‑handed match‑ups, but both have shown signs of fatigue. Lodolo, age 30, logged 115 innings last season and posted a 3.68 ERA, while Mahle, 27, struggled with command, posting a 5.01 ERA in 2025.

Adding a healthy left‑handed starter would give manager David Bell a strategic lever against the division’s power‑heavy lineups, particularly the Cardinals and Milwaukee Brewers, both of which feature right‑handed sluggers who historically fare poorly against left‑handed pitching. Bell, a former minor‑league pitching coordinator, has emphasized the importance of “left‑handed depth” in his rotation construction, noting that the Reds have faced left‑handed starters in 62 % of their NL Central games this season.

If Lowder clears his rehab milestones by early July, the Reds intend to follow the same 60‑pitch limit that protected Lodolo during his 2023 comeback from a forearm strain. The plan is to start Lowder with a 60‑pitch outing on July 7 against the Chicago Cubs, then a second 60‑pitch start on July 14 versus the Pittsburgh Pirates, allowing incremental workload while the bullpen remains fresh for the stretch run.

Lowder’s Rehab Path: From Simulated Game to Triple‑A

Lowder’s rehabilitation follows a template the Reds refined after the 2023 season, when they successfully brought back left‑hander Nick Lodolo from a Grade 2 shoulder strain in 45 days. The template includes three phases: (1) simulated work to re‑establish velocity and spin, (2) live‑innings in Triple‑A Louisville, and (3) a controlled major‑league debut with pitch‑count restrictions.

After the Citi Field session, Lowder will report to the Louisville Bats the week of June 10 for his first live‑innings. The Reds have earmarked at least 20 innings of work split across three starts, each limited to 70 pitches. During this phase, the team will monitor shoulder range of motion, which the medical staff said is now within five degrees of Lowder’s pre‑injury baseline—a threshold that historically predicts a successful transition back to the majors.

Analytics director Matt Cramer highlighted Lowder’s spin‑rate rebound: “His four‑seam spin climbed from 2,250 rpm pre‑injury to 2,400 rpm in the simulated game, matching the league‑average for left‑handed starters who post a K/9 above 9.0. The upward trend in spin and velocity suggests the shoulder is not only healed but responding well to the conditioning program.”

Historical Comparisons and League Context

Lowder’s situation is reminiscent of the 2022 rehab of Chicago Cubs left‑hander Justin Steele, who returned after a 30‑day shoulder strain and posted a 3.86 ERA in the second half of that season. Steele’s rehab also featured a 45‑pitch simulated game, a Triple‑A stint, and a 60‑pitch major‑league debut. The key difference for Lowder is the Reds’ current rotation depth and the NL Central’s offensive environment. In 2025, the Central posted a collective OPS of .765, the highest among the NL’s six divisions, underscoring the need for a left‑handed arm capable of generating swing‑and‑miss stuff.

From a league‑wide perspective, left‑handed starters with a spin rate above 2,300 rpm have produced a .250 batting average against in the last three seasons, compared to .268 for right‑handed starters. Lowder’s 2,400 rpm spin places him in the top 15 % of left‑handed starters, a metric that correlates with a 0.30 WAR boost per 10 starts, according to Statcast data.

Coaching Strategies and Bullpen Implications

Pitching coach Rick Kranitz, who joined the Reds in 2024, has outlined a two‑pronged approach if Lowder returns in July. First, he will pair Lowder with a long‑relief specialist—currently right‑hander Ryan Mahle (no relation to Tyler)—to bridge the gap after the 60‑pitch limit is reached. Second, the bullpen’s high‑leverage roles will shift, giving emerging relievers like left‑handed prospect Jace Fry more opportunities in the 7th inning, preserving veteran closer Nick Anderson for save situations.

Bell also hinted at a possible “flex rotation” where Lowder could start on short rest if the Reds find themselves in a pivotal series against the Cardinals in late July. The flexibility would allow the club to keep Lodolo on the mound longer in games where he’s performing well, while still granting Lowder the chance to accumulate innings without overtaxing his shoulder.

Key Developments

• Lowder’s next live‑innings test is set for Triple‑A Louisville the week of June 10.
• The Reds will cap his early major‑league starts at 60 pitches to protect his shoulder.
• Bell said Lowder could fill a spot if veteran Nick Lodolo needs rest, shifting bullpen usage.
• His timeline aligns with the Reds’ series against the St. Louis Cardinals, a chance to gauge his left‑handed effectiveness against a division rival.
• Shoulder motion is now within five degrees of baseline, a metric the team watches closely.

Impact and What’s Next for the Cincinnati Reds

Should Lowder rejoin the rotation by early July, the Reds would gain a left‑handed arm that can neutralize right‑handed power hitters—a valuable asset in a division where the Cardinals, Brewers and Pirates collectively rank in the top three for home‑run totals. The added depth also provides Bell with the ability to rest Lodolo and Mahle during the mid‑season stretch, potentially reducing the risk of fatigue‑related injuries that plagued the club in 2025.

Analysts caution that a rushed return could overtax the shoulder, especially if Lowder’s velocity drops below 90 mph in the second start. However, the front office’s confidence is grounded in the measurable progress: fastball velocity back to 92 mph, spin rate at 2,400 rpm, and a strike‑out rate of 6.0 K/9 in the simulated game—figures that compare favorably to his 2024 season, when he posted a 4.12 ERA and 9.1 K/9 over 12 starts before the injury.

Baseball‑savvy commentator Ken Rosenthal noted, “Lowder’s spin rate surge and the clean command he showed in the simulated game are exactly the signals you want to see before a pitcher gets the green light. If the Reds keep to the 60‑pitch limit and give him a solid Triple‑A run, he could be a mid‑season catalyst.”

From a broader perspective, the Reds are currently 4.5 games behind the Cardinals and 3.2 games ahead of the Brewers for the final wild‑card spot. A reliable left‑handed starter could tilt that balance, especially if the rotation can hand the bullpen more rest in September when the playoff race tightens.

Lowder’s rehab progress has been closely watched by fans and scouts alike. The numbers show his fastball velocity is back to 92 mph, his spin rate sits at 2,400 rpm, and his strike‑out rate in the simulated game was 6.0 K/9. Those figures compare favorably to his 2024 season, when he posted a 4.12 ERA and 9.1 K/9 over 12 starts before the injury. The data suggest that, if health holds, Lowder could provide the Reds with a quality start every other time he takes the mound, delivering roughly a 0.85 WAR per 15‑start stretch—a significant boost for a club seeking to clinch a postseason berth.