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Chelsea defender Antonio Rudiger made his injury comeback in Chelsea’s 5-2 victory over Wolves on Saturday but he was replaced by Kurt Zouma at half-time.
Chelsea boss Frank Lampard has revealed Rudiger was withdrawn at halftime because he suffered a groin injury.
Rudiger has not played for Chelsea since he picked up a knee injury during the 2-2 draw with Manchester United in April.
The German international was impressive at the back for the Blues in the first half he was on the pitch.
Asked about Rudiger’s injury, Lampard said: “He’s had a groin issue which he bothered as he came off the pitch near me actually. He slipped on some metal which made him adjust himself so he has bothered his groin.
“Hopefully it’s not too bad. It was more than a precaution because he did feel some pain so we’ll assess it over the next couple of days.
“It was just before half-time, where the ball was bouncing and he came off the pitch, unfortunately he bothered it then.
“Hopefully he’ll be ok for the Champions League.”
The Blues will take on Valencia in our opening Champions League fixture in Spain on Tuesday and Lampard will be hoping to have Rudiger fit for the game.