Warwick The 31st Annual Orange County Championships Open Tennis Tournament will take place August 12 through 21 at Thomas Bull Memorial Park. The tournament will benefit Winslow Therapeutic Center in Warwick. One of the Hudson Valley's most popular sports events, the tournament now meets the qualifications for designation as a United States Tennis Association Sanctioned Tournament. Because of the USTA designation, players will be competing not only for prize money and trophies, but also points that affect their overall rankings. Prize money events include the Men's Open Singles and Doubles, and Women's Open Singles and Doubles event. Additional events include Men's Over 35 Singles and Doubles, Women's Over 35 Singles and Doubles, Men's Over-55 Singles and Doubles and Women's Over-55 Singles and Doubles. Additional events include a Round Robin/Compete in the Park event for non-USTA members and recreational players, and a Fast-Serve Contest, monitored by a New York state trooper with a hand-held radar gun. The tournament is organized by Warwick Valley Racquet Sports. For entry fee information and details about participating, call Brooke Martis-Sarmiento at Warwick Valley Racquet Sports, 987-8004; visit the store at 28 Railroad Ave., Warwick; or visit www.warwickvalleyracquets.com.