I'm a casual runner, but I am engaged in a secret athletic struggle against my nemesis, a guy in my age group (55-59) who routinely finishes about 5 minutes ahead of me in local 5K races. It's a secret struggle because I'm not on even on his radar...but HE is on MINE. Believe me, if someone cheated and put yet another spot in the rankings between me and Nemesis, he would be stealing something important from me.