Ken Owens says the Lions made too many errors against the Blues
The Lions were beaten 22-16 by the Super Rugby side in their second game of the tour.
The visitors thought they won it in the final 10 minutes when Leigh Halfpenny put them into the lead with a penalty.
But Ihaia West had the last laugh, with a try to complete the win for the Blues.
"We put ourselves under pressure with back-to-back errors and probably our contact at the first and second phase where we overturned probably a little bit top much, especially first half," Owens said on Sky Sports.
"I don't think (we've been surprised by the intensity of teams in New Zealand), I think physically we've been right up there, obviously the speed of the game is slightly quicker, some of us haven't played for a couple of weeks but that's no excuse.
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Leigh Halfpenny – 6
It's just those slights errors that have cost us, our attacking shape was a lot better than I thought it was on Saturday
British and Irish Lions captain Ken Owens on Blues defeat
"We've got to hit the ground running, physically we've been good, we've matched them, at the moment it's our error count which is probably let us down."
Overall Owens was happy with the performance and thinks the Lions are going in the right direction.
"Pretty happy in large parts, I think defensively we had some goof line speed, we put the Blues under a lot of pressure an turned some ball over," he added.
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"It's just those slights errors that have cost us, our attacking shape was a lot better than I thought it was on Saturday.
"We definitely stepped up there but we're here for results. We're disappointed but I think we're gong in the right direction at the moment."
Ken Owens's British and Irish Lions were beaten 22-16 by the Blues
Worryingly for the Lions, The Blues are the worst of the five New Zealand sides to compete in Super Rugby and up next is Crusaders on Saturday, who are the best.
And Owens knows today's game was important to get a win on the board.
"Yeah course we really needed a win, coming on a Lions tour you want to win every game," he added.
"Unfortunately we didn't do that tonight and we're going to have to be harsh on ourselves and pick up where we've lost the game and really analyse it.
"We've got to lick our wounds, we've only got two or three days until our next game in Christchurch."