Julio Aguilar/Getty Images Pitcher Taijuan Walker and catcher Rafael Marchán of the Philadelphia Phillies celebrate a 7-0 win over the Tampa Bay Rays at George M. Steinbrenner Field on May 7, 2025 in Tampa. The expectation is that the Philadelphia Phillies will return the services of ace starter Zack Wheeler next wee k, as the 35-year-old righty is making his final rehab start on Sunday. With Zack Wheeler’s return, starter Taijuan Walker’s job is in serious jeopardy, and his future with the