Racquetball and Cards (Istanbul)

Hi, I have recently moved to Istanbul and while it is my desire I assimilate Turkish culture as much as possible, there are a few things from home I would love to continue to do. Play racquetball and play card games like pinochle, bridge, or euchre. So does any one know if there are racquetball courts in Istanbul and if so is anyone interested in playing? And is anyone an avid player of any of the above mentioned cards game and looking for another player?
Thanks!