Orlando City winger Nani had a brief confrontation with Colorado Rapids midfielder Kellyn Acosta, and both Acosta and Colorado coach Anthony Hudson took issue with the fact referee Jair Marrufo didn't send Nani off for a head-butt.
Nani went down in the penalty area with the Lions down 3-2 in the 74th minute of Saturday's match and came up looking for a penalty call. While Marrufo was talking to Rapids centerback Kofi Opare, Acosta and Nani got into an argument. Nani appeared to head-butt Acosta twice before the two were separated by Orlando City striker Dom Dwyer and Rapids goalkeeper Tim Howard.