Leicester Tigers suffered a second consecutive defeat in the Premiership as Newcastle Falcons registered a surprise 26-14 victory at Kingston Park on Friday.
Tries from Simon Hammersley and Adam Powell, together with the boot of Andy Goode, did the damage as the Tigers, who went down 10-3 at home to Sale Sharks last weekend, proved unusually toothless again.
The Falcons' third win of the season lifts them to 10th, while Leicester remain third, but risk losing more ground on leaders Saracens and second-placed Exeter, while they are also vulnerable to Harlequins, just one point back in fourth spot.
The visitors had led 6-0 and 9-7 early in the first half through the boot of Freddie Burns, but quickly found themselves in trouble.
Newcastle went in 20-9 ahead at half-time after Hammersley and Powell touched down, Goode converting both tries and sending over two penalties.
Full-back Hammersley exploited a gap in the Tigers' defence to cross in the 15th minute, while Powell scored his try with five minutes remaining the first term thanks to some quick thinking from Goode, who kicked for the corner after Leicester were penalised for side entry at a ruck.
Goode extended the home team's advantage with another penalty 10 minutes into the second term.
Tigers threatened to mount a comeback when Laurence Pearce scored a try in the 64th minute after effective use of the ball from right to left, but Burns missed the conversion attempt to leave his team with plenty to do.
And there were no further scores from the out-of-sorts heavyweights, Craig Willis sending over an 80th-minute penalty to cap off an impressive Newcastle triumph.