Hull, the bottom club, scrapped for every inch of turf against Peter Fox's side and, belying a disappointing start which has yielded one point from six games, played impressively before finally going down 12-6 to the league leaders.
It was a piece of individual brilliance which turned the match Bradford's way after an hour, the full-back David Watson spinning round from a play-the-ball to force his way over and leave Deryck Fox with a simple kick to seal the win.
The champions, Wigan, maintained their challenge when they went on a try-spree against Wakefield at Central Park to make it seven wins out of seven.
Gary Connolly led the way for the Riversiders as he collected a hat-trick of tries in their 46-0 win, staking his claim for a Great Britain Test spot in the process. A harrowing lesson was learned by the Belle Vue side, but the visitors did themselves no favours with a series of handling errors.
The most eventful match of the day was at the Watersheddings where Oldham and St Helens shared 36 points. Ambitious Saints were up against it after a bad start and found themselves facing a 16-6 deficit by the break.
But they staged a remarkable comeback for a share of the spoils when the full-back Steve Prescott went over for a try which Bobby Goulding improved with just three minutes left.
Doncaster's bubble seems to have well and truly burst following their 22-12 defeat at lowly Salford, who deserved their victory.Reuse content