Northampton served up an FA Cup shock as 1987 winners Coventry suffered a home upset for the second year running.

The Cobblers made the perfect start when Nicky Adams’ fifth-minute free-kick evaded everyone to find the net. 

In-form League One side Coventry had the perfect response when on-loan Jacob Murphy equalised just five minutes later, powering home from 25 yards.

But skipper Marc Richards headed in Lawson D’Ath’s cross to send the League Two side through to round two.

The visitors’ opener had an element of luck when Adams’ intended cross bounced past Coventry keeper Lee Burge into the net before Murphy levelled.

But City, beaten at home by non-league Worcester City a year ago, suffered problems down the flanks and the Cobblers made it count on 18 minutes when Richards headed in his 10th goal of the season.