Cross Game, Smash! Recommendations
The protagonists in both mangas end up following in the footsteps of an amazing girl in their corresponding sports, starting worse, trying to catch up and trying to surpass them. Kou and Azuma show similar aspects in their developments throughout their stories.
Similar story about romance with sports background. Both follows the path of MC's sports career. As Cross Game has a subtle romance, in Smash it has more impact to the whole story. In both stories both MC's are sports prodigies.