How would an American sport react?

Given previous athlete v. consumer interactions (Pacers fight at Detroit, Dodgers going into the stands), I think it is very likely if a similar situation occured in the US, the player would face a much longer suspension. I wonder if his employment contract included a waiver covering assault?

http://news.findlaw.com/ap/o/51/09-11-2007/df4a000395ea0c9e.html

Juventus defender Zebina banned four matches for slapping stadium worker

(AP) - MILAN, Italy-Juventus defender Jonathan Zebina was banned for four matches by the Italian league Tuesday for slapping a stadium worker.

The incident occurred as Zebina was walking off the field after picking up his second yellow card during Juve's 3-2 win over Cagliari on Sept. 2. Zebina also received a €15,000 (US$21,000) fine.

Another Juventus defender, Jean Alain Boumsong, hurt his left thigh during a friendly with Zaragoza on Friday and will be out for two months.

Juventus has won its first two games since returning to Serie A and shares the Italian league lead with AS Roma. The two leaders meet on Sept. 23.