Winchester clawed back a two-goal first half deficit before being beaten 5-3 by South Premier Division 1 rivals Tunbridge Wells, for whom former Havant hit man Ben Alberry scored twice.
Debutant Nick Clark and Ollie Lander got Winchester back to 2-2 but TW struck twice to restore their two-goal cushion. Ben Hibberd got it back to 4-3 before Tunbridge settled it late on.
Trojans dropped to second from bottom after a 3-1 home defeat by Banbury. Ben Frost scored for Trojans.
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