hello Resphoina,..

your logo's quite good but needs to fix more ,. here is my suggestion :
- The black and grey is the racquet ? it seems like a people to swim .. u should trace a real racquet make it more real ( the shape) i think the racquet shape looks real if the ball removed and joining the broken part ( at the fire shape ) ..

-The colors , . actually logotype must hav 3 color only ( standard ) ,.. for this logo based on your color i think u should use red n orange .. that's better

-The typo, hmm nice , but try to use sans-serif types .. its better.

-The line between the words , give a space between it.

that's all ..