Is only doing 1 sport going to affect my chances in getting into a good University?

[Izzy]

So far I'm a sophomore and I'm only doing 1 sport and that is track. I really want to get into a really good university (like a UC) but I have a feeling that doing only 1 sport may weaken my chances. I made varsity at the last 2 weeks of the season last year so I'm for sure in varsity this year.
For the record I get REALLY good grades at my school (4.0 non-weighted) in really advanced classes, and I'm participating in 2 clubs. I also plan on taking college courses over the summer.

[Nellie]

your are already exceeding in school by this description so you don't really need take up any other sports becuase unless your the best at that sport unversities really dont care about what sport you play so relax and do what your doing right now and you'll get into a good school