Defending league champions Queniborough took a firm grip on the Premier Division as they saw off nearest challengers Egerton Park on Sunday.
Park won the toss, but were bowled out for 152 after electing to bat first.
Queniborough knocked off the runs with six wickets and 11 overs to spare to open up an imposing 57-point lead.
In Division One, Frisby, Hoby and Rotherby slipped into the bottom two after they suffered a heavy 130-run home defeat to Ashby Carington Seconds.
Adam Buckby (80 not out) and captain Nigel Lewis (57) helped the visitors pile up 238-8 from their 40 overs despite three-wicket hauls from Luke Whitaker and Craig Caunt.
Buckby then took three wickets in the reply as Frisby were skittled for 108 despite a half-century from captain Adam Holland (55) and 20 from Whitaker.
Frisby were leapfrogged by Syston who beat Queniborough Seconds in a local derby at Potters Lane.
Tom Corbett (51) and Perry Hill (54 not out) helped Town post 208-8 before Corbett (3 for 18) blasted out the visitors’ top order.
Only three batsmen made it into double figures as bottom side Queniborough were bowled out for 140.
Elsewhere a century from Sam Woods (115) could not help Thorpe Arnold avoid defeat in a high-scoring match at leaders Empingham.
Jaimin Mistry also hit an unbeaten 40 as Thorpe made a good total of 271-8.
But knocks of 82 from opener Freddie Turner and 65 from Howarth helped the hosts to a nailbiting four-wicket win with just three balls to spare, despite the best efforts of Josh Blunt (4 for 24).