Doncaster strengthened their grip on third spot with a 22-10 Championship win over lowly Barrow Raiders at Craven Park.
It was the Dons fourth win in as many games over the Cumbrians since they were both promoted from Championship One in 2012.
Paul Cooke’s men opened the scoring on eight minutes, winger Nev Morrison touching down too far out for full-back Dave Scott to convert.
The Dons went close to a second try on 14 minutes, the dead-ball line coming to Barrow’s rescue from scrum-half Richard Wilkinson’s kick.
Cooke, who set up a try for Tom Hodson in similar circumstances in the win at Swinton last time out, put too much weight on his kick meant for the winger and the ball went dead.
The visitors added to their lead at the end of the first quarter when Richardson went over from close range for a try goaled by Scott to make it 10-0.
Barrow opened their account on 32 minutes, centre Dalton Grant cutting inside the cover to claim his 13th try of the season. Ryan Shaw converted.
Despite chances at both ends, the crowd had to wait until the 70th minute for the first try of the second half, scored by Wilkinson and converted by Scott.
Colbon hammered the final nail into Barrow’s coffin with a fourth try, again converted by Scott.
Both sides had a man sin-binned as tempers boiled over.
Barrow completed the scoring with a well-taken try by full-back Ian Mort to earn a losing bonus point.
Barrow coach Bobbie Goulding, playing only his second game in nine years, was shown a red card following a verbal exchange with a touch judge in the last minute.
*Dons: Scott, Morrison, Whiting, Welham, Hodson, Cooke, Wilkinson, Carbutt, Kesik, Robinson, Kent, Starling, Emmett. Subs: Spavin, Snitch, Spiers, Colbon.