To TAxxOUTBR3AKxx, there's only 3 people on the other team, if you watch, he spawn kills the guy he killed at the start. Not so kudos on the teamshooting though.
He's lucky the 1st guy he killed had a betrayal modifier added on, because in slayer they have 5 second respawns with teams of 4. It was near 8 seconds when he got the overkill......which means the first guy waited more than 5 seconds