It appears the Guillen and Donnelly had 2 past incidents. When they were teammates in Anaheim, Guillen was hit by an opposing pitcher, and got pissed off at his teams pitchers including Donnelly for not retaliating.  Even a greater cause of strife between the 2 may be the fact Guillen got Donnelly suspended when he pointed out that Donnelly was doctoring the ball with a foreign substance.  I don’t think this will be the last time these 2 have an incident.