Okay, I'm commenting again. In my opinion Tezuka will keep playing tennis, period, as long as his health allows it, long into the future, but I can easily see it going both ways whether or not he goes pro. I think it'll depend on what happens in the future.

I do know that I like manga!Tezuka more than anime!Tezuka. It was because of his match in Kyuushuu against the rival team. I finally saw him as human with his flaws peeking through. Seeing him deal with his fear to use his shoulder, and really all the stuff with him and that little girl, totally charmed the pants offa me.