Marcus Garnham kept a clean sheet on his AFC Sudbury debut as the Yellows won 1-0 at Romford in Ryman League Division One North on Saturday.
Scott Kemp got the only goal of the game midway through the first half to leave Sudbury seventh in the table, two points outside the play-off places.
Reigning champions Hadleigh United slipped nine points behind leaders Norwich United in Thurlow Nunn League Premier Division after they were beaten 3-2 at home by Godmanchester Rovers.
The Brettsiders are winless in four league encounters.
Steve Adams scored twice and Andy Fisher once as Long Melford returned to the top of the First Division with a 3-0 victory at Woodbridge Town, while leaders Swaffham Town went down at Haverhill Borough by the same scoreline.
Cornard United lost 2-0 to Debenham LC as manager Paul Grainger faced his former club for the first time since departing in the summer, but Mark Ray (two), Jordan Brazitis and Alex Readman helped AFC Sudbury Reserves see off Downham Town 4-0.
Halstead Town advanced in the First Division Knockout Cup with a 1-0 success over King’s Lynn Town Reserves.
In the Sky Bet Championship, Ipswich Town blew a two-goal advantage to share a 2-2 draw with Huddersfield Town, while Norwich City were held to a goalless draw at Sheffield Wednesday.
In rugby, Sudbury made a late comeback to edge out a spirited Harlow 22-15 and extend their perfect record in London Three North East to six wins from six matches this season.
In Greene King IPA Eastern Counties League Division Two South, Hadleigh maintained their perfect home record with a 38-17 victory over Stowmarket II.