Northampton boss Phil Dowson described Sam Graham’s first-half knee injury as “pretty nasty” on a tough night for the champions.
The No.8 was injured in a tackle and replays were blocked because they were too gruesome to show on stadium screens.
“He’s pretty sore and pretty upset,” said Dowson, who added that he was frustrated at how Northampton had failed to take their chances.
“Leicester had a very good defence and we were not quite on our game. It’s not all bleak because we are creating chances – we just couldn’t finish them.”
Dowson said the neck injury to Alex Mitchell was still taking ...