I've also shot people when tabbing since you need to click in the game window for it to regain "focus" and stop your mouse wandering out of (game) bounds.
Other than that, new players doing what new players do. I've only seen TK's three times since OB started, once on my team and twice on the other. It could also have been killing afk players on the other teams.
Same for people suiciding out of bounds, only seems to happen once every 20 matches or so. be nice when that gets fixed. Since your technically killing someone on your team, you should get the -15k cbill penalty.
Edited by Asmosis, 03 November 2012 - 05:32 PM.