Last updated on .From the section Scottish Cup

Scottish Premiership side St Johnstone continued their recent revival by easing past Greenock Morton to reach the last 16 of the Scottish Cup.

A half-time floodlight failure delayed the second half by over 20 minutes but that could not upset Tommy Wright's side, who have now lost just once in their past eight matches.

Callum Booth's drive put the Perth side ahead after four minutes, with Murray Davidson adding a second after the break and Stevie May rounding off the scoring.

St Johnstone have now conceded just once in six unbeaten outings, but their back line worked hard for their clean sheet against their Championship visitors.

Morton had a succession of chances, but the 2018 quarter-finalists could not find a way past Zander Clark.

The visitors responded well to going behind early, with Luca Colville having the best of the chances. The build-up play included a stylish backheel, and the slick passing deserved a more composed strike as the winger fired over the crossbar from close range.

A long-range effort from Nicky Cadden bounced off a St Johnstone player, but Reghan Tumilty failed to turn the rebound home.

St Johnstone manager Tommy Wright: "The result is the most important thing. The performance was good in patches but it was enough. I think we showed that extra bit of quality, which we should have being the Premiership club.

"Our lads were on the bikes [during half-time delay], although the way we started you wouldn't have thought it. The referee was probably close to postponing it. I think he was going to give it two or three more minutes."