By Wrestling do you mean Greco-Roman wrestling or TV Wrestling? Both are physically demanding.
Now onto Baseball. Running bases, sliding, catching fly balls, pitching, hitting. Yes Baseball is demanding. In short bursts.
Tennis is as physically demanding as Football or Soccer without the punishment of hitting the ground. Long sustained stop-and-run. Rapid turning and twisting. And Just because they have maybe 1 tournament a week or so don't think they arn't practicing every day just like Football players who play 1 day and practice 5-6.
Hockey is very hard. Not only for the fast skating and rough slaming, pushing and puck slapping. You try speeding on skates, getting rammed into a wall, then falling on solid ice. See if the fall doesn't hurt too.
Rugby is insane. It's like Football without the rules or TV timeouts. Just run, kick the living crap out of anyone on the field and keep running. In Austrailia if you break a leg from playing and complain about it they call you a wimp and ridicule you. They expect you to play with broken faces, legs, arms, missing heads, whatever. That's a tough sport.
The toughest without a doubt? Synchronized Water Ballet.
You try getting all those fat ladies lined up in a pretty circle and making it look like a blooming flower. Sheesh.
Ok water polo is hard too. But only because horses can't swim well.
My favorite men's Tennis player was John McEnroe. Female was Arantxa Sanchez Vicario. The bulldog of tennis. Not only for her playing style. But....well..she's not the prettiest thing on the court.
http://www.igs.net/~bmitchell/Tennis/Sanchez/sanchez.htm Edited, Mon May 10 00:33:37 2004 by EQDom