If you play CS, and for example get a bad score and want to reset the game/round/whatever, so the scores are 0 0 0 0 00 0 0 00 0 0 0...(if you for example play against bots or is admin of a server)..
Also, if you're using statsme, just delete the 'statsme.log' and blam! stats logging reset. So if a kid starts playing under your username, you can get rid of those horrible stats they put on you.
sv_restart forces the server to reload the map after a few seconds, which resets the ingame stats recording, sv_restartround just restarts the round, but I don't think it resets the ingame stats recording...
Later-a-much, and LONG LIVE THE D!,
(Link>>>MarD's Moddin' Site<<<Link) MarD