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Hartley extended their lead at the top of the Kent League Premier Division to 30 points after crushing second-placed Beckenham by 116 runs on Saturday.
Openers Nick Hendrie (38) and Dan Stickels (56) made the major contributions as Hartley posted 179-9. William MacVicar took 4-27 for the home side.
Beckenham were all-out for 63 in reply with Daniel Redwood finishing with 4-13 and Jack Laraman 3-13.
At the other end of the table, bottom side Folkestone's all-rounder Himanshu Waingankar starred with bat and ball at Bexley but it wasn't enough to prevent his team from losing by 87 runs and having their relegation confirmed.
Waingankar took 7-39 as Bexley scored 214 with Aiden Griggs making 52 and George Wells 38.
Folkestone replied with 127 with Waingankar top-scoring with 49.
Second-bottom Sandwich Town registered a second consecutive win after beating visiting Tunbridge Wells by five wickets.
Opener Nick Selman (58) and Marcus O'Riordan (55) helped Wells post 194. Matthew van Poppel (4-36) and Alex Smith (3-30) did the damage.
Tom Chapman (57 not out) and Rory Smith (55 not out) shared a fifth-wicket stand of 111 to see their team home.
Bromley also enjoyed a five-wicket success after chasing down Blackheath's 145 all-out.
Michael Thornley (39) and Tanweer Sikander (35) led the way for Blackheath with Sean Griffin (4-24) and Nathan Hill (3-12) sharing the bowling honours.
Bromley were 28-4 at one stage before Miguel Barbosa (50 not out) and Nick Bluett (38 not out) steered their side home in the 37th over.
Zack Crawley hit 59 as Sevenoaks Vine scored 202-9 against Lordswood with Amjad Khan taking 3-31.
Lordswood were dismissed for 187 in reply after looking well set at 159-4 at one stage.
Opener Chris Piesley made 71 while Tom Parsons took 5-43.