Dunlop force 100t 25 junior tennis racket the dunlop force 100 25 junior tennis racket is suitable for young players aged 9 12 or about 137 152cm 46 5 tall being a junior version of the great force 100 the racquet packs a number of dunlops newest technologies and encourages to build up power and consistency its slightly shorter length and lower weight make it highly controllable while the big 100in2 645cm2 head size with an enhanced sweet spot makes for an easier smash plus th