Injured top seed Nick Kyrgios out of Delray Beach

Top seed Nick Kyrgios withdrew from the singles draw at the Delray Beach Open on Tuesday with a wrist injury, the tournament announced.

He was replaced by Daniel Elahi Galan, the tournament said.

"I'm dealing with a little bit of a left wrist injury; been dealing with it for the last week or so," Kyrgios said Monday, according to Tennis.com. "Some sort of tendon thing. Apart from that, feeling pretty good."

This was the first time Kyrgios was the top seed at an ATP event.

He remains in the doubles draw. His partner, Jordan Thompson, retired from his match against Miomir Kecmanovic on Tuesday.

The 24-year-old Australian also withdrew from the New York Open earlier this month, with a shoulder injury.

Kyrgios, who is ranked No. 21 in the world, is 6-2 in singles matches this season.