The Philadelphia Phillies enter the final days before the MLB trade deadline facing questions that extend beyond simply adding another bat or bullpen arm.

As the surge under interim manager Don Mattingly devolves into a skid following the All-Star break, the Phillies face some existential questions about how far they can get with their veteran core of superstar players. And as virtually all of the roster has underperformed in recent weeks, franchise shortstop Trea Turner appears to be under particular scrutiny.

Philadelphia Phillies Send Harsh Trea Turner Message With Trade Deadline Looming

Turner has had an up-and-down tenure with the Phillies after joining the team on an 11-year, $300 million contract.

He has had some prolonged slumps at the plate, but now his ability to defend the shortstop position has come into question as well. He currently leads all of baseball with 19 errors so far.

Recently, the Phillies acknowledged just how costly Turner’s defensive regression has been for the team as a whole.

“Right now he’s in a bad place,” infield coach Bobby Dickerson told The Philadelphia Inquirer’s Scott Lauber. “And it puts us all in a bad place, really.”

Though shortstop is one of the most challenging positions on the diamond, Turner’s struggles this season have often appeared mental and raised questions about just how much longer the veteran can expect to play there.

“He’s just in a place where he’s searching, and he’s too internal with his thought process,” Dickerson added, per Lauber. “The ball’s put in play, and he’s thinking more about what to do with his body than engaging with the ball. ... You can see he’s a step late, not as aggressive, not as decisive.”

And it isn’t helping matters that Turner's defensive struggles have coincided with one of the weakest offensive stretches of his career.