A frantic 10-minute period just before half-time cost Hunslet dear as their second row forward Bob Wilson and the scrum-half, Chris Ross, were sent off for throwing punches.
The winger Paul Southwell was the hero for Gary Murdock's side with two tries, but Hunslet had the chance to square the match in injury time. Ian Smales's conversion attempt drifted wide, however, after an Ikram Butt try, and Ellenborough joined Egremont, who beat Workington Town on Friday, in the hat for the next round.
There were few surprises elsewhere as Wigan ran in 14 tries to humiliate Keighley 76-0 and the reigning champions, St Helens, saw off Featherstone Rovers 56-24 at Post Office Road. Shaun Edwards marked his competitive debut for Bradford with a try as the Super League champions beat Rochdale 48-10, while Martin Offiah grabbed a hat-trick of tries as London Broncos fought off a determined effort by Batley Bulldogs to win 44-20.Reuse content