Crawley boss John Gregory queried some of the referee's decisions during his side' 2-1 triumph over Walsall at the Bescot Stadium.
Saddlers manager Dean Smith criticised referee Kevin Wright after the game.
Home skipper Andy Butler accidently handled the ball when it bounced awkwardly in the fourth minute, but Wright pointed straight to the penalty spot and Matt Tubbs fired the visitors ahead.
Tubbs headed a second goal shortly after half-time and that was enough for all three points despite Sam Mantom pulling one back for Walsall.
Crawley held on after striker Billy Clarke was sent off for a second yellow card when he was booked for time-wasting 10 minutes from the end of the game.
Smith felt the penalty should not have gone against his team and also thought the Saddlers were denied two spot-kicks of their own for fouls on Febian Brandy and Craig Westcarr.
Gregory joined his counterpart in questioning some of Wright's decisions.
On Clarke's red card, he said: "Other players from both teams were fouling non-stop throughout the game and nothing was said.
"The referee was influenced by the home crowd because Walsall were losing. We had to battle for all we were worth, but we hung on and we are going home with three points."
Crawley had not played for a month because of the weather, but they flew out of the blocks and put Walsall on the back foot from the start by winning the early penalty.
Gregory said: "To put in that kind of high tempo performance having not played for four weeks was extraordinary really and shows how well the players have looked after themselves.
"They showed their professionalism at what is an exceptionally difficult place to win. A times Walsall were better than us at keeping the ball, but that's a small criticism.
"Walsall are a good team who move the ball well, but despite that our goalkeeper hasn't had a lot to do."