Skip to main content
Come Fan with UsSaturday, June 20, 2026

Mariners’ Taijuan Walker will make 2014 debut Monday vs. Astros

The Mariners’ top prospect has finished his minor league rehab stint and is ready to go.

Otto Greule Jr

The Seattle Mariners Cano-centric push to compete this season could make them an active team on the trade market as the deadline approaches, but they might have an effective reinforcement on the way to the majors from inside the organization. Top prospect Taijuan Walker has completed his rehab assignment and is set to make his 2014 debut on Monday against the Houston Astros, manager Lloyd McClendon announced Saturday night (via MLB.com's Greg Johns).

The Mariners are sitting in third place at the moment, at 43-38 in the AL West. Walker could step into the M's rotation and provide them with a solid fifth starter, something they haven't had this season. Brandon Maurer and Erasmo Ramirez have started a combined 18 games at the back end of the rotation. The Mariners are 6-12 in those games. If Walker performs the way he has during his minor-league career -- the way many scouts believe he can in the majors -- Seattle could be in much better shape behind Felix Hernandez, Hisashi Iwakuma, Roenis Elias, and Chris Young.

Shoulder issues have kept Walker from starting the season with the team, having been shut down at the end of February. However, his return won’t necessarily prevent the Mariners from considering the acquisition of another starting pitcher, but he could help the team remain in a position that warrants another bold move.

Last season, the 21-year-old made three starts for Seattle, pitching to a 3.60 ERA with 12 strikeouts and four walks in 15 innings. In six Triple-A starts this year, he has posted a 4.11 ERA with a 1.04 WHIP. Coming into the season, most top prospects lists had him in the top 10, and several evaluators considered him the best pitching prospect in the game.

See More:

More in MLB

MLB
Oklahoma-Georgia gave us an incredible family moment at the Men’s College World SeriesOklahoma-Georgia gave us an incredible family moment at the Men’s College World Series
MLB

Kolby Branch’s final collegiate swing capped off a bittersweet night for the Branch family in Omaha

By Mark Schofield
MLB
Men’s College World Series 2026: Schedule, scores, and how to watchMen’s College World Series 2026: Schedule, scores, and how to watch
MLB

Here is everything you need to know about the 2026 Men’s College World Series, from the full schedule to how to watch

By Mark Schofield
MLB
Owen Hull and UNC knock off West Virginia to advance to the MCWS FinalsOwen Hull and UNC knock off West Virginia to advance to the MCWS Finals
MLB

UNC is headed to the Men’s College World Series Finals after knocking off West Virginia in Omaha

By Mark Schofield
MLB
Men’s College World Series: Joey Volchko dominates as Georgia knocks off TexasMen’s College World Series: Joey Volchko dominates as Georgia knocks off Texas
MLB

Georgia’s Joey Volchko was dominant as the Bulldogs knocked off Texas to open their MCWS

By Mark Schofield
MLB
Men’s College World Series: Gavin Gallaher, Colin Hynek deliver for UNC vs. Ole MissMen’s College World Series: Gavin Gallaher, Colin Hynek deliver for UNC vs. Ole Miss
MLB

Gavin Gallaher’s first career MCWS hit came at a perfect time for UNC against Ole Miss

By Mark Schofield
MLB
Men’s College World Series 2026: One key player for each teamMen’s College World Series 2026: One key player for each team
MLB

Here is one key player to watch on each team at the Men’s College World Series

By Mark Schofield