PHOTO GALLERY: The 13th annual Observer Challenge

Ron Gatti goes across the court to hit a backhand shot during his singles match against Tim Fitzpatrick.
Andy Adams goes for a forehand shot during his mixed doubles match.
Francoise Beaurpere warms up on the court.
Tim Fitzpatrick jumps up to get the ball.
Katharine Girle goes for a backhand shot.
Walter Hackett hits an easy forehand during his doubles match Friday, Dec. 7, at the Longboat Key Public Tennis Center.
Kathy Hase follows through on her backhand after hitting ball.
Scott Hase goes for a low backhand Friday, Dec. 7, at the Longboat Key Public Tennis Center.
Mary Lou Johnson goes to hit a backhand.
Richard Kaleida hits the ball.
Helene Letourneau warms up before her mixed doubles match.
Pat Maxson goes for a forehand shot in her match Friday, Dec. 7, against Mary Lou Johnson in the Observer Challenge.
Andy Sawyer and Linda Gillot pose in front of the Observer Challenge board.
Emme Shapiro bends down low to get the ball.
Ron Shapiro goes for a high volley shot.
Suzie Singer prepares to hit a forehand during her doubles match Friday, Dec. 7, at the Longboat Key Public Tennis Center
Richard Stoneman bends down to hit a low front hand shot.