Grasshoppers were without a game and Dunnington took full advantage, Rob Hart leading the rout with four goals.
Ross Wilkinson scored twice and there were also goals for Joe Wains, Liam Summers, Matty Phail, Olly Ellwood, Simon Castle and Andy Rose. Copmanthorpe ended a run of four games without a win in style as they crushed Riccall 7-1.
Danny Leach hit four of their tally, with two coming from Mike Revell and one for Tom Settle.
Sam Elliott snatched a consolation goal for Riccall.
Chris Johnson (2) and Ali Bell were the Rovers scorers, but they were eclipsed by Saints’ Jack Thackray (2), Adam Newell and Rob Pinder.
Dringhouses came to life in the second half at York RI as they ran out 5-1 winners after a goalless first period.
The scorers were Sam Kitson, Tom Hawksby, Jimmy Clamp and Dan Clipson (2), with Danny Wood replying for RI.
York St John moved away from the relegation zone in reserve ‘B’ following a 4-1 home win over Bishopthorpe.
Graham Vickers gave Bish the lead, but the students hit back through Daniel Tingay, Michael Grogan (2) and Darren Jewick.
Amotherby came from 2-1 down at home to Tadcaster Magnets to win 4-2 and end a five-match winless run.
Matty Bean hit a double for Amotherby to add to goals from Danny Foxton and Nick Robinson.
Andy Browes, Jack Heath, and Paul Gordon were on target for the visitors, with Andrew Wood getting a late goal for Aviva.
Nick Daniels hit the only goal of the game as Pocklington defeated Heslington 1-0.
Reserve ‘C’ leaders Selby RSSC needed an equaliser from Kyle Pool to salvage a point from their home encounter with Tockwith.
Despite Ricky Hutton scoring for the third game on the trot, Hemingbrough are still looking for their first win of the season after losing 4-2 at home to Rowntrees.
Stamford Bridge chalked up a sixth straight home win after they beat Poppleton 4-0.