Phillies Turn to Brad Keller as Jhoan Duran Lands on Injured List

The Philadelphia Phillies’ bullpen depth took an early-season hit on Saturday with the announcement that closer Jhoan Duran has been placed on the 15-day injured list. The move comes as the team manages a left oblique strain that will temporarily sideline one of its key late-inning arms.

In response, the Phillies are expected to shift responsibilities at the back end of their bullpen, with Brad Keller positioned to handle most closing duties during Duran’s absence. The adjustment comes at a critical time as the team continues to establish late-game roles.

Jose Alvarado is also expected to see increased responsibility in setup situations, filling a key bridge role in front of Keller. The reshuffling reflects Philadelphia’s effort to maintain stability despite the injury setback.

While the diagnosis is not considered severe, the timing forces the Phillies to adjust their bullpen structure early in the 2026 campaign.

1. Keller Steps Into Closing Role

Brad Keller is expected to take over primary closing duties while Duran recovers, according to reporting from MLB.com’s Todd Zolecki. The decision positions Keller in one of the most important late-game roles on the roster. Keller has typically operated in a setup capacity, but the team views him as the most immediate internal option to handle high-leverage ninth-inning situations. His experience was a key factor in the decision. Jose Alvarado will likely shift into a setup role, forming a new late-inning combination alongside Keller. This change gives the Phillies flexibility depending on matchups and game situations. The bullpen restructuring reflects the team’s attempt to maintain continuity while managing an unexpected injury to a key reliever.

2. Duran’s Injury And Recovery Outlook

Jhoan Duran’s injury was diagnosed as a “very mild” left oblique strain after imaging results were reviewed. While the injury is not considered serious, it still requires a short recovery period. The Phillies have expressed optimism that Duran could return after approximately 15 days, though his availability will ultimately depend on how he responds to treatment and rehab. Oblique injuries are often managed cautiously, particularly for pitchers, as the muscle group is heavily involved in rotational movement. The team is expected to monitor his progress closely before making any return decision. Despite the short-term setback, the organization remains confident that Duran will resume his closer role once fully healthy.

3. Performance Contrast Highlights Bullpen Shift

Before the injury, Duran had been one of Philadelphia’s most effective bullpen arms. Through seven appearances, the 28-year-old posted a 1.35 ERA and a 0.750 WHIP while collecting eight strikeouts and five saves. His early-season performance solidified his role as the team’s primary closer, giving the Phillies a reliable option in tight games. His absence now creates an immediate void in late-inning stability. In contrast, Brad Keller has had a more uneven start to his first season in Philadelphia after signing a two-year, $22 million contract in the offseason. The right-hander enters the closer role with a 4.70 ERA and a 1.304 WHIP through the early part of 2026. Keller’s performance will now be closely watched as he transitions into higher-leverage situations, with the Phillies relying on him to hold the bullpen together until Duran returns.