Mason believes lacks of concentration constituted for this defeat as Tottenham were booed off by their returning fans.
Steven Bergwijn gave the hosts a dream start to the game when he broke the deadlock in the opening eight minutes, but the joy in front of the 10,000 fans short-lived when defender Sergio Reguilon shockingly sliced the ball into his own net to bring Dean Smith’s men level on 20 minutes.
England striker Ollie Watkins pounced on another Reguilon error to score his 14th league goal of the season, and that proved to be the match-winning goal.
“Disappointing. We started the game brightly, unfortunate circumstances for their first goal and they didn’t have to earn the second one either,” Mason told reporters after the game.
“I didn’t think there was much in the game, just those moments. When you make an unfortunate mistake as we did it gives them a good feeling. We tried to break them down but didn’t take those crucial moments.
"It was just about trying to keep our discipline. We lost our shape at times. It was about trying to stay patient and calm. They had pace on the counter and were always a threat. It is a disappointing evening.
“I’ve not looked at the other results yet. We have to pick ourselves up and go again at the weekend. We started the game brightly, the player’s minds were focused on the game."
