Baseball can't, except in spring training. In that case, it ends in a tie after 10 innings if the score is still tied.
Cricket (Only the ODI & T20 format)
Swimming
Boxing
Wrestling
Assuming a single game rather than over a number of frames/legs then snooker, pool and darts would fit.
skateboarding and alot of other extreme sports in skateboarding you're your own team as well, so it's just a matter of who is the best skateboarder.
