Just 20 points separate the top five of the Hevey Building Supplies NCL Premier Division.
With 10 games remaining, Rushton moved up to pole position with a five-wicket defeat of previous leaders Peterborough at Station Road, although the sides are level on points.
Rushden are third, seven points off the summit, with Old Northamptonians fourth (14 points behind) and Finedon 20 points off the top in fifth.
Against Rushton, Peterborough were bowled out for 160, Ashley Rogers top scoring with 53, as Dan Bendon did the damage with figures of six for 36.
This total didn’t cause any undue difficulties as Ben Mansell’s 61 steered them home with 13 overs to spare.
Rushden saw off Brixworth by six wickets.
The home side collapsed from 67 without loss to 131 all out, with Gareth Griffiths (4-6) having the most impact and Mikey Phillips (46) ensured the chase was a straightforward one.
Old Northamptonians are lurking menacingly in fourth after they got the better of Wollaston by 61 runs.
Rob White (102) made his second century in as many weeks as the visitors totalled 248 for eight before declaring with two overs remaining, Dan Harris adding 35
The hosts were then dismissed for 187 (Liam Bates 59) with Tom Heathfield taking four for 54 and Afaq Babar and Phillip Ellis claiming two wickets apiece.
Finedon Dolben had too much for Stony Stratford.
Stony managed 145, Russell White hitting 35 and Northants bowler Maurice Chambers 31, which Finedon knocked off for the loss of only two wickets.
Oundle picked up win number seven as they beat Saints by six wickets.
Bashrat Hussain took four for 32 as the Saints were dismissed for 151, skipper Mark Wolstenholme making an unbeaten 51.
The hosts lost three early wickets but an unbeaten 50 from Alex Martin and 46 from Phil Adams saw them over the winning line despite Wolstenholme grabbing two for 20 and Fazel Niyazi two for 29.
Horton House’s best campaign for years continued as they demolished Burton Latimer by 208 runs.
Leo Carter hit 140 - his third century of the season - and Jack Johnson 65 as the hosts racked up 333 for five which was far too many for Burton who were skittled for 125 (Luke Odell 51) with Charlie MacDonnell taking five for 35 and Andrew Neate three for six.