Carter’s Park A halted Moulton Harrox A’s charge in EBF Spalding and District Bowls League Division One to blow the title race wide open.
Leaders Moulton had reeled off eight top flight wins on the spin, but were shot down 4.5-1.5 against the second-placed Holbeach side.
The hosts racked up a whopping 102 shots, with leading trio Scott Dunham, Annie Bellamy and Andy Dunham top scoring with a dominant 34-6 rink return.
Harrox’s lead is now just 2.5 points – with Whaplode Drove a further point back in third.
That’s after they knocked off Carter’s Park A 5-1, winning three of the four rinks.
Stand-out performers for the victorious hosts were Linda Stanton, Jack Redden and Bob Grounds as they picked up a 28-13 triumph.
At the other end of the standings, Billingborough saw off Royal Mail Cart A 5-1.
All three of Boro’s successful rinks won well, with D Robinson, J Jones and E Atten (27-18) top scoring.
The table was turned upside down in Division Two, as the leading four at the start of play all lost.
That included leaders Holbeach USC A, who were routed 6-0 at rivals Carter’s Park C.
All of the rinks were keenly-contested, but the home side edged all four – with the best of them seeing S Hornsby, J Meadows and R Dunham snare 21 shots.
Second at the start of play, Whaplode Drove were also on the wrong end of 6-0 scoreline.
They were stung by Moulton Harrox B as D Alderton, M Perkins and J Hicks sealed a 29-7 set success.
Basement boys Goodfellowship also got in on the act. They upset third-placed Spalding Town B 5-1 to make it back-to-back wins for the first time this season.
Their top scorers were Pam Rate, Peter Judd and Mick Rate (26-10).
Meanwhile, Division Three side Spalding Town C finally registered their first win of the season.
After eight fruitless outings they finally delivered against high-flying Consti B and emerged 5-1 victors.
Two of the winning rinks amassed 25 shots, with M Taylor, T Nicholls and T Geldart (25-14) winning the most handsomely.
Leaders Sutton Bridge A were also in fine form. They mauled Moulton Harrox C 6-0 to move 14 points clear, bagging 108 shots in the process.
Division Four table-toppers Castle C also managed a century of shots. They beat Ayscoughfee C 5.5-0.5 (101-52) to move eight clear, with 34 of them coming from R Briars, R Perkins and B Benton.