Training Day Tuesdays: @charleston_tennis_coach Mehdi El-Kheddiwi puts the spotlight on mentee Garrett Dieck, a 10U junior with the fast feet. "This is our dynamic footwork warmup exercise to increase your speed, agility and quickness on court." Share your top #MoveYourFeet #drills using hashtag #PlayforLife. #USTennis #Tennis #TennisLife