Philadelphia Phillies ace Zack Wheeler underwent a "successful thrombolysis procedure to remove a blood clot in his right upper extremity" on Monday, the team announced. Further treatment and a recovery timetable are still be determined.

The procedure was completed by Dr. Paul DiMuzio at Thomas Jefferson University Hospital. Wheeler, who is on the 15-day injured list, felt heaviness in his shoulder following his start on Friday, and was later diagnosed with a blood clot near his shoulder.

The Philadelphia Phillies announced pitcher Zack Wheeler underwent a successful surgery Monday and will return at a to-be-determined time.

We've reached the point in the season, with roughly six weeks to go, when every injury has a chance to be a season-ender. So when the clear front-runner for NL Cy Young lands on the IL, it's nothing short of a gut punch.

Kyle Schwarber hit a tiebreaking, three-run homer in the seventh inning and the Philadelphia Phillies beat the Washington Nationals 6-2 to snap a three-game skid

The Phillies managed to punish the Nationals bullpen, getting back-to-back home runs from Kyle Schwarber and Bryce Harper to claim a 6-2 victory at Nationals Park. And in snapping a three-game losing streak, the Phillies improved to 70-52 and now have a six-game advantage over the New York Mets in the NL East.