Spalding and Market Deeping both slipped to their first defeats of the year in the Readers Lincs Premier.
Both sides have started the season well but Spalding were undone by former New Zealand Test player Tim McIntosh.
The Kiwi all-rounder last year set a league record of 1,203 runs in a season as Sleaford won the title and he’s continuing to smash bowlers left, right and centre this term.
He hit an unbeaten 123, including 20 boundaries, to take his season’s tally to 399 from just five innings.
His second century of the campaign saw his side to a 10-wicket victory over Spalding who failed to show the form they have done so far.
Big-hitting openers Mahesh Rajaratne and Warren Nel were both out with the score showing just 32 and it wasn’t long before it got worse.
Just two more runs had been added by the time Sri Lankan Wamanga Perera went for a duck.
Spalding’s middle order dug in but no batsman managed to reach 30 as Spalding were dismissed for a lowly 177.
Deeping lost by 117 runs at Louth. The visitors recorded the league’s highest score of the day, 275-7, at Outgang Road and Deeping were unable to respond as they were all out for 158.
Patrick Brown took his first wicket at this level but otherwise Deeping’s bowling display was not to the standard they would normally expect.
Billingborough lost by three wickets against Grimsby Town, despite the efforts of Dave Newman.
He hit 53 in Billingborough’s total of 152 and Grimsby got home with a little over three overs to spare.