Generic sports strips like this I usually don't consider worth linking, but it is important to note that Charles Schulz eventually starts up a second, short-lived strip called
It's Only A Game. Warning: link contains
adult figures drawn in the Peanuts style!
It's Only A Game was a shallower gag strip devoted to various types of sports, including more cerebral ones such as Bridge, to which Schulz was devoted. The supplied link is to a discussion of the strip and its history, along with Schulz's assistant/eventual ghost artist for the strip, Jim Sasseville. The article is a bit of an eye-opener; Charles Schulz could be kind to friends, but apparently he could also cut them off at a moment's notice.
(Thanks RAB for the link to that one, from some time back.)