The Royals were playing their first Premier League encounter since their trip to Chelsea on August 22 and found themselves overrun in the first half, struggling to impose themselves on the visitors.
|22/1||Reading are 22/1 with William Hill to go to WBA and win 2-0
"In the first half we weren't ourselves for whatever reason," McDermott told talkSPORT. "We can talk about the fact that we haven't played for 3 weeks but the good thing is we've got that game under our belts.
"We haven't played for such a long time in this league so it took us 45 minutes to really get going and we were 1-0 down, still in the game.
"My regret - and I hate having regrets in football - is that we didn't give them the game that we know we can do."