There are times where Bukkit does not credit a player with a kill (such as when a player falls off a cliff due to arrow fire) when they deserve the credit. AutoReferee should track such instances so that match statistics better reflect the number of kills each player was responsible for.

I'm pretty sure that player does get the kill. It's the same as hitting a mob so he falls of a clip and still dropping xp. There you get credit too.

Perhaps. My concern is was more with the death messages, but as long as getKiller() is coming back with the right player, I guess it is no big deal.