Haywards Heath set a club 1st team record of eight successive league wins to stay firmly on the heels of leaders Lindfield on Saturday.
Jethro Menzies (2-10) and Josh Woodfield (2-17) made the early breakthroughs before Jonny Phelps (5-26) completed a miserable afternoon for visitors Crawley.
A paltry total of 79 proved easy for Heath as Phelps (30) and opening partner Steve Goulds (16) put on 52. Despite the loss of three quick wickets, victory was completed in the 14th over.
Lindfield stayed top as they effectively ended the promotion ambitions of Ansty, who seven days earlier had also lost to Heath.
Leo Anderson (55) helped Ansty post a total of 168 as James Pearce claimed 5-54 and Lindfield looked in real trouble at 40-4. It was still looking precarious when Phil Weir came in at 83-5 but he then dominated play with an unbeaten 64 and assisted by Gareth Allen (33) helped secure a four-wicket win.
Burgess Hill started brightly at Rottingdean but the introduction of off spinner George Ledden (6-33) sent them crashing from 66-1 to 143 all out. Ledden was well supported by leg spinner Mohammed Hossain (3-23).
In reply, Ian Simpson bowled seam up for the first time this season after a lingering back problem and with brother Jack bowling with great control at the other end, Hill had a chance.
But hopes faded once George Ledden (30no) joined his brother Henry (54) at the crease as the hosts completed a six-wicket win.
Keymer & Hassocks have struggled this season but they claimed a welcome five-wicket victory over whipping boys Lewes Priory, for whom Rob Meek hit 77 and Richard Eborn 57 to post a total of 162. Patrick Corrigan (4-30) and Andy Westgate (4-74) did the damage.
In the West there was also a welcome win for Henfield but it could hardly have been closer as they defeated Steyning by one run at the Common.
Tony Brugnoli’s 53 helped the hosts set a target of 175 and Steyning fell just short despite the best efforts of Dave Kennett (74). Brighton Mugochi emerged the home hero with a matchwinning 6-52.