A wave of optimism swept round Castle Park despite Knights losing in agonising fashion to rivals Leeds.
Ryan Burrows’ try in added on time stole a barely merited victory for Leeds from a thoroughly entertaining friendly encounter.
The defeat was hard on a new-look Doncaster side who more than matched their Championship counterparts, offering moments of flair in attack while looking well-organised throughout.
A superb late try from Paul Jarvis, latching onto Paul Roberts’ kick, appeared to have won it for the Knights before Burrows nicked it at the death.
Tom Davies and Phil Eggleshaw added further tries for Doncaster, while Roberts kicked a conversion and penalty.
The nature of the defeat left a sour taste but Knights’ overall display offered real hope that the club are well set to bounce back to the Championship at the first time of asking.