World number one Andy Murray has pulled out of his first exhibition match at Hurlingham Club with a sore hip.
The Briton, who was knocked out in the first round at Queen's last week, was due to play France's Lucas Pouille at the Aspall Tennis Classic.
Murray is still expected to play on Friday before he begins the defence of his Wimbledon title on 3 July.
The 30-year-old last played at Hurlingham in 2014 after he lost in the last 16 at Queen's.
Elsewhere, world number two Novak Djokovic managed two games against Canadian Vasek Pospisil at Eastbourne before rain delayed play.