tennis training systems, namely, apparatus' having an elongated elastic cord that allows a tennis player to repetitively hit a ball such as a conventional tennis ball, a foam ball, a sponge ball, a pressureless tennis ball or a low-compression tennis ball; tennis racquets having an elongated elastic cord and a tennis ball attached thereto

'allow':12 'apparatus':5 'attach':55 'ball':20,26,29,32,36,43,54 'compress':41 'convent':24 'cord':10,50 'elast':9,49 'elong':8,48 'foam':28 'hit':18 'low':40 'low-compress':39 'name':4 'player':15 'pressureless':34 'racquet':45 'repetit':17 'spong':31 'system':3 'tenni':1,14,25,35,42,44,53 'thereto':56 'train':2

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