ATP Tour Extra Duty Tennis Balls - 3 Pack | Premium Tennis Ball Case for Storage & Travel | Ideal for Tennis Matches, Practice & Court Training

The ATP Tour Extra Duty Tennis Ball is the official tennis ball of the ATP tour and the #1 ball used at ATP tournaments. They're made with HD Pro Cloth and an HD Pro Core for ultimate consistency and performance. Extra duty tennis balls are designed to be played on hard courts. Each case contains 24 ball cans for a total of 72 tennis balls.