Wasps boss Dai Young felt his side should have beaten Leicester more convincingly than 14-12.
Wasps are unbeaten at home this season in all competitions, but they could have lost that record had George Ford kicked a late penalty for the visitors.
Young believes his team should have wrapped up the points a long time before that.
"We're really pleased to get the win," he said. "In reality we should have won that game more comfortably than we did. Leicester, being Leicester, just don't go away but I don't think they threatened us that much. We always felt pretty comfortable in defence."
Young praised centre Elliot Daly as "a threat every time he had the ball," was equally impressed by the performance of his pack lacking England locks Joe Launchbury and Tom Palmer.
"I thought the two young props - Simon McIntyre and Phil Swainston - did really well and James Cannon in the second row stood up."
Tigers director of rugby Richard Cockerill said: "We're disappointed we didn't win. It was a pretty poor game from both sides - a pretty dogged, horrible non-event.
"With international call-ups and a couple of injuries we had about 16 or 17 players but we should have played better.
"We got no set-piece parity at times. In the second half the scrum was diabolical, whether it was us, them or the ref. We made it hard on ourselves.
"We didn't deliver from the scrum or the line-out. Our accuracy and delivery were really poor around the set-piece.
"They have some very quick guys - Elliot Daly and the two wingers - and they put us under some stress in the wide channels," he added.