Declan Wilson hit a hat-trick as Fishtoft put seven past Old Doningtonians in the Taylors Garages Premier Division.
Jamie Khun (two), John McGarel and Neil Allen completed the scoring in the 7-0 success.
Old Leake had a comfortable 3-1 away win at Graves Park. Bert Snaith netted a penalty and a header and Adam Tempest also scored before the hosts pulled one back.
Goals from Ben Jaques and Mark Lovelace helped Wyberton to a 2-0 away win at Skegness Town Reserves.
Benington recorded a tidy 2-0 away success at Mareham United, Lewis Mundt (pen) and Gavin Bell on target.
Pointon beat Freiston 5-2, with goals from Ian Jacques (three), Jamie Andrews and Ollie Cooper.
Goals from Adam Dales and Jamie Lyall helped Spilsby Town beat Billinghay 2-1 after Jac Wright had opened the scoring.
In the Taylors Peugeot Division One, Freiston Reserves won 4-1 at Billinghay Reserves. Phil Soltys struck the Billinghay goal.
Coningsby’s Andy Kelly and Tom Sewell scored in a 2-0 success against Sutterton.
Wyberton Reserves had Steve Melady sent off after just three minutes when they played hosts to Skegness United Reserves, but Diogo Garcia, Nicky Syndercombe and Reece Beauchamp saved his blushes in a 3-2 win.
Fosdyke beat Pointon Reserves 4-3 thanks to goals from Sam Reeson, Nicky de Vries (two) and Tom Watson.
Wainfleet United beat Woodhall Spa United 3-1.
The Taylors Ford Division Two saw Leverton beat Nelson 4-2. Nathan Rippin (two), Alex Tilley and Adam Abell were the matchwinners, while Nelson’s Liam Shinn scored twice and was then sent off.
Westside Rangers won 3-0 at home against Mareham Reserves, James Leafe, Neal Wheatley and Andy Baker on target.
Josh Prince netted twice as Spalding Harriers beat Kirton Town Reserves 2-0.
In the Taylors Vauxhall Division Three, Benington Reserves and Spalding Harriers Reserves drew 0-0.
Holbeach Bank Reserves won 3-2 at Rippingale and Folkingham Reserves and AFC Tetford beat Sutterton Reserves 5-2.
Jamie Dawson, Damian Gibbons, Nathan Rivett and an own goal helped Boston College beat Rippingale & Folkingham 4-3 in the Target Newspapers Challenge Cup.
Park United knocked out FC Hammers thanks to Tim Billingham’s penalty.
Ruskington Rovers and visitors Friskney finished level at 1-1 after extra time, with the hosts winning 3-1 on penalties.
DJ Wright and Rob Masters both struck two goals apiece as Swineshead brushed Rippingale and Folkingham aside 5-1.
Ollie Coulham hit the other Swineshead goal.