Peterborough 1 Shrewsbury Town 0
A spectacular goal by Peterborough substitute Nathaniel Mendez-Laing sent Shrewsbury Town to defeat at London Road.
The striker netted within two minutes of his introduction, after 62 minutes, with a superb curling effort.
Town had earlier on withstood a brief attacking storm from the hosts and they had the woodwork to thank that they didn't fall behind inside the first two minutes.
Midfielder Paul Taylor had beaten Town goalkeeper Chris Weale with a superb curling effort which cannoned back off the far upright.
Britt Assombalonga also went close, firing over from 15 yards out and his strike partner Tyrone Barnett headed wide from an unmarked position, having escaped his marker to meet Danny Swanson's corner kick.
Weale had to be alert early in the second half to deny Assombalonga at the near post and Michael Bostwick should have done better from a corner kick, heading over.
But Jon Taylor, Aaron Wildig and Cristian Lopez all went close for Town at the other end as the hosts appeared to be running out of steam.
Mendez-Laing struck the decisive blow though, after replacing Paul Taylor, midway through the half.
Left back Joe Jacobson drilled a long range effort for Town just wide five minutes from the end, from a swift counter attack.
And Jon Taylor's 20- yard drive was denied by a very good Bobby Olejnik save three minutes later but Peterborough survived the late charge.