Monfils withdraws from Washington event
France's Gael Monfils returns against Czech Republic's Jiri Vesely during their men's singles second round match on day four of the 2014 Wimbledon Championships in southwest London, on June 26, 2014 - by Glyn Kirk
The announcement came five days after Monfils, ranked 23rd in the world, abruptly pulled out on the opening day of the ATP tournament in Atlanta, where he was the number three seed.
Monfils, beaten in the quarter-finals of Roland Garros by Andy Murray, hasn't played since falling to Czech Jiri Vesely in the second round at Wimbledon.
His withdrawal from next week's event will deny him valuable hardcourt competition ahead of the final Grand Slam of the year, the US Open that starts at Flushing Meadows on August 25.