[MLS CUP PLAYOFFS: Houston-D.C. United] Upon watching replays of Houston Dynamo defender Andre Hainault's takedown of  D.C. United's Raphael Augusto late in the first half of the first leg of their Eastern Conference final series, PRO general manager Peter Walton said Ricardo Salazar should have red-carded Hainault. No call was made, and the Dynamo went on to rally from a 1-0 deficit and win, 3-1.

At halftime, Walton, who had not watched a replay on television, said a foul should have been called but Hainault should have only been yellow-carded.

"From the angle I saw in the stadium I thought it was a foul," he said. "Had there been a foul called, and of course it wasn't, I would've expected a yellow card. Looking at it in real time, I thought the tracking defender [Houston's Luiz Camargo] could have influenced the outcome of that particular play. That was my opinion from seeing it in real time."

Having watched the incident again, Walton said: "In review of that play, my opinion has changed in as much as the defender, which I thought in real time would have influenced the play, clearly was behind the action and therefore the disciplinary sanction should have been a red card for denial of a goal scoring opportunity."

Walton said the play "ticks all the boxes for a denial of as goal scoring opportunity and a send-off should have been the outcome."