The Premier League outfit were expected to overcome the Bantams at Valley Parade, but found themselves on the wrong end of a 3-1 scoreline.
All three of Bradford’s goals came from set pieces, much to Lambert’s displeasure:
“I’m really disappointed we lost the game, we are in a game now, that’s for sure.” He told Sky Sports.
“We knew what was coming – set-pieces – and we never defended them well at all. That’s definitely what’s hurt us but that’s certainly not good enough.
“We had a lot of the game and yes they were set-pieces but set-pieces are a vital part of the game and you’ve got to defend them. We didn’t do that.”
However, the former Norwich boss was upbeat about his team’s chances of booking a place at Wembley, but insists that they must up their game in the return leg at Villa Park:
“But it’s half-time and we’ve got time to retrieve this. We’ll see what happens in a fortnight’s time.
“We know what we’ve got to do and we’ve certainly got to do a lot better than that.”
Nahki Wells, Rory McArdle and Carl McHugh netted for the home side, but Andreas Weimann gave the Midlanders a potentially important away goal.