After Wimbledon, Querrey uses Kastles to prep for Citi Open

WTOPAfter Wimbledon, Querrey uses Kastles to prep for Citi Open - WTOPWTOPSam Querrey, seen here at Wimbledon, is aiming for a successful couple weeks in D.C. between the Kastles and the Citi Open. (AP Photo/Pavel Golovkin). WASHINGTON — Meet Sam Querrey. The second highest-ranked American man, he's a top-30 player ...