Wasps director of rugby Dai Young had mixed reflections after his side gave their new owners a bonus-point winning start with a 43-14 victory over London Irish.
The home side turned an 11-9 half-time deficit into a runaway win, but Young had a few gripes about his team's performance.
"First half was pretty disappointing," he said. "Up front we failed to get any platform in the scrum and lineout. We were second best in most departments. In attack we failed to hold the ball for any length of period to build any pressure and momentum."
He added: "Coming in at half-time, the dressing room wasn't a very happy place to be."
However, a second-half transformation produced two tries for wing Tom Varndell and one each for scrum-half Joe Simpson and replacement prop Zak Taulafo, while veteran Wales fly-half Stephen Jones ended his Wasps debut with a 23-point goalkicking haul.
"We had to step up in every department and we did," said Young. "Second half we looked a completely different team. We were far more potent with the ball in hand, defensively we looked far stronger and the forwards stepped up. We looked a far more complete team.
"I thought we deserved to win but the bonus point probably flattered us.
"I don't think we were that much better than London Irish but fair play to the boys to keep playing right to the end."
Brian Smith, the London Irish director of rugby, has now seen his side concede 123 points in their opening three matches but remains optimistic they can quickly turn their form around.
He said: "There's no reason to panic. It's early doors in this competition. We went in with our tails in front at half-time but we dropped off the pace 55 minutes into the game. That's really disappointing."