Andy Murray, Karen Khachanov pull out of Cincinnati tourney

(Photo credit: Geoff Burke-USA TODAY Sports)

Andy Murray and Karen Khachanov pulled out of the Western Southern Open in Cincinnati ahead of their scheduled first-round match on Tuesday morning.

Both cited injuries, with hopes of recovering in time for the U.S. Open, which begins Aug. 28 in New York.

Murray, 36, withdrew from last week's National Bank Open in Toronto because of an abdominal injury. The Scot was set to f