I've been watching this thread for 8 pages, and finally decided to weigh in. Contrary to what most folks here have been saying, I don't believe team sports are a requirement in order to show athleticism or leadership - they are simply an easy way to do so.
My DS last played a team sport as a 9 year old. He did run cross country and swim in high school, and competed at a national level in triathlon and cycling.
He has been ranked #1 on his Bn OML since his MS1 year, and #1 on the Bde OML as well. He consistently scores 330+ on PT tests, he's been Ranger Co Cmdr, and graduated from CDQC with flying colors last summer. He will likely be Bn Cdr next year as an MSIV. He didn't even apply for an ROTC scholarship in high school, but secured a 4 year by September of his freshman year.
He managed to accomplish all of this without ever playing football, basketball or baseball. No one cares. Those sports are not the only path to prove athleticism, and certainly not much of a measure of leadership ability.
All that having been said, if you hope to be awarded an ROTC scholarship out of high school, you need some vehicle to prove both your leadership and athletic abilities. I'll not comment on your current resume, but you need to take a hard look at your activities and decide if you're proving you've got what it takes for ROTC and the military.