Philadelphia Phillies ace Zack Wheeler endured an unusually brief outing on Monday in the opener of a three-game series against the Miami Marlins, leaving both fans and reporters concerned.Zack Wheeler struggled from the very beginning, surrendering two runs in the first inning before giving up three more in the second. (IMAGN IMAGES via Reuters Connect)The veteran right-hander struggled from the very beginning, surrendering two runs in the first inning before giving up three more in the second.Although he settled down with a clean third inning, his night ended there as the Phillies removed him from the game after just three innings of work.As Wheeler's outing unfolded, The Athletic Phillies reporter Matt Gelb noted that something appeared to be bothering the 36-year-old.Posting on X, Gelb wrote, “It looks like Zack Wheeler is going to be done after three innings. Something was affecting him all night. He threw a 91 mph sinker in the third. Phillies brass, after huddling in dugout, made the call.”The Phillies have not announced whether Wheeler suffered an injury or experienced any physical issue. However, his early departure immediately sparked concern across Major League Baseball.John Stolnis, a Washington, D.C.-based reporter and producer posted, “To say a Wheeler injury would be devastating is understating it. Really hope it’s nothing major.”MLB journalist Jeff Kerr also emphasized how significant Wheeler's absence could be for Philadelphia's postseason hopes.“No matter what you think of the #Phillies…They are going to have a very hard time getting to October if Zack Wheeler has to miss a significant amount of time,” Kerr wrote.This story is being updated.