By GUY WILLIAMS

Doncaster K .....35pts
Tries: Holling 6, Margetts 17, Daly 24, Holden 36, Kelly 71
Conversions: Dolly 6, 17, 24, 36, 71

Ampthill ............ 19pts
Tries: Lutui 27, Strong 43, Devine 65
Conversions: Rankin 43, Partington 65
Doncaster won their fourth league match thanks to an excellent first half but then lost their authority.
The Bedfordshire side, outplayed before the interval as the Knights dominated to score four tries, suffered throughout because of their indiscipline which resulted in three yellow cards against skipper Charlie Beckett (repeat offending), centre Josh...