<p>I got in Cornell, a top 5 CS program, with a similar resume. Fairly high test scores(35 ACT, 1570/2330 SAT), good academics(9/600 rank), no ECs (even less than your tennis). I think I wrote a pretty good essay, so that probably helped me make the cut. My advice? Most ECs take years to build, so try to focus on something that doesn’t take as long. Like competitions. I was state champion in some competitions during my senior year so that probably also made up for some of my deficits. Of course, most mid-range schools, like Renessaelar just need good grades, grades and other portions. Being a bit weak in the ECs won’t hurt much.</p>