Here's a requested drawing for "MatthewJabezNazarioA" of DeviantArt which focuses on his favorite sport: boxing.
It's the Cutie Mark Crusaders getting in shape for what is probably the biggest boxing match in Equestria. I'm not sure about Sweetoe Belle, but Apple Bloom and Scootaloo are al psyched up for the "mane event". (Get it?)

Fan art by me, characters by Hasbro