His name was Jaymeister II. He shot me in the back earlier today for 2 maps in a row, so I left the game. A couple of hours later, he was on my team again. He was having trouble with an opposing player, so I went to his aid to show "no hard feelings", I killed his attacker, and as I turned to leave he shot and killed me again. We ended up dueling, and I realized we were messing up the game (CTF) for everyone else so I left again.