you said any help is good, right ^^ I try but guess i am wrong...
here stepbrothers, both made basketball but the older stopped bec. of the younger one
http://www.mangago.zone/read-manga/toshishita_no_ryuugi/
here only the overtake fits... younger bro is in love with older bro's friend. he (younger bro) is better in sports then the friend so the friend stops (or want to)
http://www.mangago.zone/read-manga/baka_de_guzu_wa_daikirai/
It's not that one since the brothers are related to each other from what I can remember.
I already thought so. but sometimes our (or my) memories are making fun with me- so I thought I give it a try :)
I hope you will find it soon ヾ(❀╹◡╹)ﾉ~
I think it was a sports manga, with two brothers and it involved like gymnastics or something like that. The younger one wanted to be like the older one and soon overtakes him. The older one stops /quits doing the sport. He later takes up/starts doing another sport I think like karate or something like. I can't remember clearly, any help is good.