Prior bemoans verdict
Matt Prior felt England were unlucky not to pick up a second Sri Lanka wicket as the tourists failed to be overawed by the size of the home side's total.
The hosts posted an imposing 575-9 before declaring, Joe Root reaching 200 not out and Prior's 86 the next best effort on the scorecard on the second day of the first Investec Test at Lord's.
But their hopes of pressing home their advantage were rebuffed by the visitors as they reached stumps on 140-1.
Kaushal Silva made an unbeaten 62 but might have been the second wicket to fall when he nicked Stuart Broad to Prior.
The wicketkeeper was certain he had taken a clean catch in front of his body but slow-motion replays left enough doubt for the verdict not to be given.
Asked about the incident, Prior told Sky Sports: "You saw my reaction, I had no doubt about the catch. I thought it carried.
"I thought I got my hand, certainly my finger, under the ball. There's a rubber tip on keeping gloves and you can feel when it hits that.
"I've gone forward at the ball and certainly thought it carried but it's always tricky when it goes upstairs with the camera angles. We're disappointed but we get on with it."
Change of Prior also explained the change of heart out in the middle that helped him answer critics with a fine counter-attacking innings.
Having suffered a chronic loss of form and then been dropped during the Ashes, he was close to falling lbw for a second-ball duck.
Having survived that scrape, he then benefitted from a more care-free approach.
"Certainly after my second ball I'd have taken it (86)," he added. "For a year or so I've not had things go my way. I was watching (for the umpire's decision) and I looked at Joe Root and said 'things are changing...I'm back'.
"In a lot of ways that triggered me off again. I thought 'why are you sitting in? Play you game'.
"I've always been an attacking player, if I get out, so be it."
Meanwhile, Sri Lanka coach Marvan Atapattu was in relatively buoyant mood after a solid response from his side.
"It turned out to be a good day, particularly having fielded almost five sessions," he said. "The wicket was so good that number nines and 10s were looking like top order batsmen, all credit to them but it tells us something about the wicket.
"Funny things happen in cricket. We need runs on the board to make the play and hopefully we'll have a better idea by the end of tomorrow."