Can anybody estimate how many calories I would burn during 2hrs of playing doubles? How about singles? I weigh 260 lbs and am 5' 9" male I've tried several calculators that I found online and it seems very excessive to me. According to the calculators I would burn about 600 cal/hr in dbls and 700 cal/hr in singles. That would mean that I am burning 1200 cals on dbls league night! (I play for 2hrs) It just doesn't sound right. Thanks in advance. edit: I forgot to add that I am a 3.5 player.