Fellow strugglers Workington Town hammered another nail into Doncaster’s relegation coffin following their 37-6 win at the Keepmoat Stadium.
A game which was viewed as the Dons’ best chance of breaking their duck in 2015, ended with a 14th successive league and cup defeat for Paul Cooke’s side.
There is still time for coach Cooke to preserve the Dons’ Championship status, but given the club’s current position it would rank among his greatest achievements in the game.
The Dons drew first blood with hard-working full-back Dave Scott showing good pace to make the line after supporting a Steve Snitch break.
Town had shown enough before the 13th minute try to suggest that there was going to be no repeat of their 70-0 defeat at Featherstone a fortnight earlier, and hit back to grab a 10-6 interval lead with tries by dual-registered Wigan prospects Rhodri Lloyd and Lewis Tierney.
The game looked too close to call at the start of the second half, but Town ran away with the game just as they had done at Derwent Park back in February.
Tierney, the eldest son of Jason Robinson, added a further two tries – the first of which had class written all over it – with Lloyd also grabbing a second.
Worryingly for Cooke, not only did his side concede five tries they rarely breached the Town 20 let alone threaten a try.
To add to his woe, prop Mitch Clarke was sent off for throwing a punch.
Doncaster: Scott; Hodson, Logan, Dunn, Fox; Cunningham, Nicklas; Spiers, Howarth, Groat, Turget, Snitch, Emmett. Substitutes: Clark, Tyson-Wilson, Kelly, Cowling.
Workington: Murphy; Tierney, Lloyd, Mossop, Miller; Shorrock Doran; Walker, Mattinson, Shackley, Phillips, Stack, McAvoy. Substitutes: Horton, Tomkins,Olstrom, Coward.
Referee: G Hener (RFL).