Oh Uryuu, never try to defeat an athlete, even if it's at sports they don't know. Their bodies are just more flexible and used to effort.
Though I guess rollerblades would be pretty strange for a runner like Asahi to use. You use your momentum very differently than running.
But it looks like Uryuu's cooking and general selflessness has once again given him points to Asahi. If just his effort can make Asahi like him, I can't think of how much more she'll like him if he actually succeeds in his goals!