Otley ran over four tries against Hinckley in a 29-14 victory in National Two North.
Hooker Joe Graham scored the first of his two tries after just two minutes, before centre Stephen Nolson also scored to help the Yorkshire side to a 14-0 lead with just 20 minutes gone.
Hinckley pulled one back, but Otley led 29-7 with Graham’s second try and another from full-back Ben Magee.
Wharfedale couldn’t make it four wins in a row after they lost to second-placed Chester 28-25.
They trailed 21-8 at half-time with only centre Rhys Lovegrove having touched down.
After the break they hit back to lead 25-21 with hooker Dan Stockdale and scrum-half Philip Woodhead having tries converted by Jack Blakeney-Edwards, who also kicked a penalty.
However, a late converted try saw Chester take the win.
Sandal went 19-0 down inside the first 15 minutes against the Vale of Lune before they scored 50 unanswered points in a 50-24 victory in the North Premier League.
Winger Danny Grainger crossed the line twice in three minutes for Sandal, and added another in the 42nd minute to complete a hat-trick and help Sandal hit back.
Four more second-half scores came via a penalty try, stand-off Gregory Wood, winger James Ellar and full-back Jack Townend as Sandal moved up to fourth in the table, leapfrogging Harrogate who tasted defeat at the hands of Alnwick, 13-10.
Elsewhere, Ilkley came unstuck at third-placed side Blaydon with the Durham team taking maximum points in the 36-10 win.
Scarborough went top of North One East after beating bottom-side Consett 31-14.
The Yorkshire side crossed the line five times in the win which sees them overtake Huddersfield YMCA after they failed to take the maximum haul of points away from their tie with Pocklington.
York and Morpeth met in a battle between third and fourth but neither could be separated with the fixture ending in a 16-16 stalemate.