Quinn seals shock
Selby pulled off a surprise 21-20 victory at title-chasing Castleford as their revival continued.
Third-placed Castleford thought they had clinched the win but a late penalty from Selby saw them snatch a fine victory.
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Hide AdStand-off Carl Paterson kicked a drop-goal in the eighth minute for the home side, but Selby hit back with Chris Quinn slotting over a penalty.
Winger Ben Lunt touched down five minutes later, and Quinn added a penalty.
Castleford hit back with
full-back Craig Jeffels and centre Mike Haywood touching down and right winger Ian Mattison converted both tries to make it 17-11.
Selby battled on, and Lunt bagged his second try, Quinn converting to edge his side back in front at the break.
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Hide AdMattison kicked a 47th-minute penalty to see Castelford re-take the lead, but Quinn's late penalty ensured the points went to Selby.
Bridlington beat Keighley
15-14 at Dukes Park after a good second-half comeback.
The West Yorkshire side led 14-0 at the break with Paul Sinfield touching down and Rob Wilkinson kicking three penalties.
The home side battled back well. Replacement winger Will Davies scored a try which stand-off Jamie Muru converted, and winger LJ Burrows added another before Muru contributed a penalty.
Dinnington overcame Heath 31-19 at Lodge Lane. Inside centre John Ryan touched down twice, and winger Olly Rogers added one and
full-back Darren Cannadine kicked two of the conversions and four penalties.