Lewes dropped back one place to 20th in the Ryman Premier Division after suffering a 1-0 defeat to Leiston at a rain-drenched Dripping Pan.
The Rooks had moved up to 19th with their heartening 2-0 win over high-flying Margate on Thursday night.
But a 77th minute Gareth Heath goal scored direct from a corner condemned Simon Wormull’s men to a 1-0 defeat.
It was very cruel on a committed Rooks side playing in extremely challenging conditions.
The hosts dominated on a pitch that, thanks to the day’s rain, was a pudding from the start but became near unplayable by the end.
Team news saw Lewis Hamilton return to the team in place of the injured Dom Ozga, while – in a rare piece of good news on the day for the Rooks – skipper Steve Robinson returned for the first time since his December injury at Concord to take his place on the bench.
Results elsewhere in the division were a mixed bag for a Rooks side desperate to avoid the bottom two relegation places. Rock-bottom side Carshalton Athletic continued their remarkable recent rise in form with a stunning 3-2 victory away to second place Lowestoft Town, while Wingate & Finchley leapfrogged Lewes in jumping out of the drop zone with a 3-0 home win over Kingstonian.
However, Lewes could have dropped into the drop zone themselves had Hastings United beaten Hendon. Thankfully for the Rooks they lost 2-1 at home to Hendon, while teams just above Wormull’s men, Cray Wanderers and Thurrock, also lost (2-0 away to Wealdstone and 2-1 at home to Bognor Regis Town respectively).
Full list of today’s Ryman Premier Division results:
Concord Rangers 1-2 Harrow Borough
Enfield Town 0-2 Canvey Island
Hampton & Richmond 0-3 East Thurrock Utd
Hastings Utd 1-2 Hendon
Lewes 0-1 Leiston
Lowestoft Town 2-3 Carshalton Ath
Margate 1-2 Met Police
Thurrock 1-2 Bognor Regis Town
Wealdstone 2-0 Cray Wanderers
Whitehawk 2-2 Bury Town
Wingate & Finchley 3-0 Kingstonian.
Updated league table after today’s results, 16th to 22nd (key: position, team, games played, goal difference, points):
16. Harrow 37, -15, 40
17. Thurrock 37, -16, 38
18. Wingate 39, -25, 38
19. Cray 38, -27, 37
20. Lewes 38, -15, 36
21. Hastings 36, -17, 35
22. Carshalton 39, -23, 34
ROOKS: Betts, Hamilton, Kay (Wormull), Dunne, Breach, Malins, Godfrey, Harding, Crabb, Beckford, Brinkhurst (Madhani). Subs: Robinson Lewis, Schaaf. ATT: 479.