Reading manager Brian McDermott hailed the "phenomenal character, desire and resilience'' of his side after their stunning victory over West Brom.
"It was a struggle today. We had to stay in the game and they didn't get the third goal, which would have finished the game off,'' said McDermott. "If you get a goal back, anything can happen.
"The real Reading is the last eight minutes because that is what I have seen over the last three years – a phenomenal character, desire and resilience. You don't normally win games when you are 2-0 down. We have a dressing-room that is all going in the same direction. It is a big win for us.''
For 80 minutes, Reading seemed destined to be bottom of the table after QPR's draw with Tottenham. But the unexpected victory has given impetus to their bid for top-flight survival.
"We have won two of the last three games in this league and three of the last four (in all competitions),'' added McDermott.
"We had good control and I certainly couldn't see the finish to the game that happened,'' said Clark, who denied it was down to complacency or a sense that his players felt the game was won.
"I am disappointed. I am not sure (what happened). I can't be more honest than that. We should have scored four or five but then we lost a goal and for some reason we lost our shape and we lost our composure and conceded the two late goals that cost us the game.
"Football can be a strange game and today is one of those days.''