Scottish Cup: Rangers beat Dumbarton but Ross County and St Johnstone dumped out

Rangers made their superiority count in a routine 4-1 Scottish Cup fourth-round win over League Two Dumbarton.

Philippe Clement's men returned to competitive action following the winter break and dominated on a poor, rain-soaked pitch before midfielder John Lundstram headed in at the back post in the 35th minute.

Striker Cyriel Dessers knocked in from close range just four minutes from the interval.

Stevie Farrell's spirited side limited their cinch Premiership opponents to fewer clear-cut chances in the second half but Gers skipper James Tavernier scored a penalty in the 78th minute and, although Matthew Sheils headed in a consolation for the home side, Gers substitute Scott Wright restored the visitors' three-goal lead moments later with a powerful finish.

Partick Thistle avenged their Premiership play-off loss to Ross County by knocking the Staggies out of the Scottish Cup with a 3-0 victory.

Former County striker Brian Graham opened the scoring for the visitors, with Scott Robinson making it 2-0 in the closing stages of the first half.

A stunning finish from Stuart Bannigan shortly after the restart put the result beyond doubt.

A Nikolay Todorov goal nine minutes into the second half was enough for Championship Airdrieonians pull off a shock and knock Premiership outfit St Johnstone out 1-0.

Todorov pounced from 10 yards to score his fourth goal in as many matches after Liam McStravick's cross was hooked back in at the far post.

Scotland goalkeeper Craig Gordon made his first appearance in 13 months as Hearts scrambled into the fifth round of following a stoppage-time Frankie Kent winner away to cinch League Two side Spartans.

The Jambos looked set for a smooth afternoon against their Edinburgh counterparts when Kenneth Vargas