Furious Sydney FC coach Graham Arnold declined to take questions in the post-match press conference following his side's "criminal" 2-1 loss to Adelaide United at Coopers Stadium.

Arnold informed the waiting media on Friday night he would offer a "statement" only in the wake of the clash which saw the Reds convert a 95th minute penalty to snatch victory.

Young Sydney FC defender Alex Gersbach was given his marching orders for a crude challenge on 28 minutes, forcing the Sky Blues to see out the remainder of the match with 10 men.