Astros make three key roster adjustments, moving Teng to bullpen after knee injury stint

The Houston Astros announced a set of roster moves on July 17 that directly affect their pitching depth, including the return of right-hander Teng after a right knee sprain. According to the team’s announcement as reported by Yahoo Sports, Teng had also indicated some arm fatigue alongside the knee issue, and he will transition to a bullpen role going forward after returning from the injured list.

Teng’s stay on the injured list was retroactive to June 28. The plan upon reinstatement is notable because it changes how the Astros intend to use him. The move suggests Houston is trying to manage workloads carefully while still keeping the same pitching talent available in games that are often more bullpen-dependent during the stretch run.

In his current season usage, Teng has made 23 appearances with 10 starts. The reported record during that span is 4-6, reflecting mixed results across both starting and relief work. The Astros’ decision to shift him toward the bullpen frames the remainder of his season as a leverage option rather than an every-fifth-day rotation piece, at least for now.

Alongside Teng’s reinstatement, the Astros recalled Spence. While the reported item does not provide specific details on what role Spence will fill, recalls typically indicate the team needs immediate help at the major-league level, whether to cover innings for a bullpen unit that has been operating through high-stress sequences or to provide additional relief matchups.

The third move involves placing Matthews on the injured list. The reported summary does not specify the nature of Matthews’ injury, nor does it state the length of time he will be out. Still, moving a roster player to the IL is usually a response to a health issue that has impacted availability, and it typically forces a corresponding shuffle somewhere else on the 40-man and active rosters, which is consistent with both Teng’s return and Spence’s recall.

These transactions come at a critical point for MLB clubs because mid-July roster construction can foreshadow how teams will handle September call-ups, late-inning matchups, and injury gaps that emerge unpredictably. For Houston, the combined effect is clear: they are rebalancing their pitching staffing with Teng’s role change, using Spence as an immediate reinforcement, and removing Matthews from availability via the injured list.

For fans watching how the Astros manage risk and opportunity with their staff, the key question is how quickly Teng will be able to build consistent bullpen outings. Even when pitchers are cleared to return, transitions from starting routines to bullpen schedules can be as much about feel and recovery as it is about raw health. Another practical watch item is how Houston deploys its other leverage options behind Teng, particularly in games where the bullpen is used early.

The next developments to monitor are the timing and usage patterns that follow these roster moves, especially in the days after Teng’s reinstatement. If the Astros keep him in shorter, high-intensity stints, it would support the stated plan for a bullpen role, while any extended outings could indicate the team is still calibrating what the knee and the reported arm fatigue will allow. At the same time, the Matthews injured list move will shape how the club fills his spot over the coming weeks and whether additional pitching depth is required.

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