Fight during "good game" postgame handshake

[johnnyg08]

Hi guys,

One of the umpires in our assn. witnessed a fight in the handshake line after a game was over. Can an umpire eject the players? My question is do we have an OBR rule that states when the umpire's jurisdiction is over? I've looked through the MLB rules and I can't find when the umpire's jurisdiction is over. Please help me out on this...cite a rule that would support an ejection...if there isn't one...then please state that as well...I did consult the rulebook..but the teams play tomorrow and I'd like a rule to support an ejection if there is one.

Thank you,
John