Children should be encouraged to play sports at the same time giving importance to their studies too. Their energy will be chanalized properly. They may excel in Both. All play no studies is bad as only studies no play is also bad.
I agree, everything should be encourage, but time should be managed well. I did well in school. But I did extracurricular activities too; Sports, yearbook and mocktrial. The season system helps, so you are not busy all the time. But my mom was about setting a time table of everything, that helped a lot.
Although I get Sweety's fear of him getting injured...but you cant let your kid live in fear either.