CRICKET: Perfect start is over for championship challengers
The top two suffered home defeats to end their 100 per cent starts to the Premier Division season.
Spalding are four points clear of Bourne 2nd - but they both allowed Woodhall Spa 2nd and Freiston L&L to close the gap in the title race.
The league leaders and defending champions lost by 37 runs to Grantham 2nd at Spalding Grammar School on Saturday.
Joe Broomfield picked up four wickets after Stewart Mudie (79) led the way for the visitors.
Spalding's reply got off to a solid start through Broomfield (38) and Jon Manton (24).
But none of the other home batsmen reached double figures until number nine Brandon Andrews smashed 46.
However, that effort was too little, too late for Spalding as Ramakrishna Mangineni got a five-wicket haul.
Meanwhile, Bourne 2nd were beaten by four wickets against Graves Park at Abbey Lawn.
Bottom-of-the-table Billingborough lost again as they fell short 128 runs of the huge target set by Sleaford 2nd.
Division One leaders Market Deeping 2nd eased home by six wickets at Baston.
There were also away wins for Spalding 2nd and Pinchbeck.
Andrew Beeston claimed five wickets in Pinchbeck's dramatic victory at Boston 3rd.