Sandal ran out 34-12 winners over Yorkshire rivals Otley in National 2 North.
Flanker James Briscoe scored a try in each half, while stand-off Greg Wood and centre Simon Frewin also touched down, and Wood also kicked four conversions and two penalties.
Centre Mike Coady and winger James Wood scored Otley’s try while Stephen Depledge added a conversion.
Harrogate’s strong defence proved key as they won 29-17 against Tynedale at Rudding Lane.
Winger Harry Barnard and centre Luke Edwards scored their only tries, while full-back Lewis Minikin kicked five penalties and two conversions to seal the win.
National 3 North champions Sheffield Tigers ended their campaign with their first home defeat of the season when they were pipped 28-27 by Ilkley despite scoring four tries to the visitors’ two.
Morley, who are assured of second place in North 1 East and still have a game in hand, won 28-12 in their game at Wheatley Hills.
Selby scraped a 33-31 home win over mid-table Scarborough in Yorkshire 1 to avoid relegation, but Old Crossleyans, who needed to win and for Selby to lose, were themselves defeated 20-13 at home to Old Brodleians and will go down along with West Park Leeds.
In National One, next-to-bottom Wharfedale lost 19-15 at Fylde and are now three points behind Cinderford.