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Faversham and Sittingbourne (blue) take a tumble during Monday's derby at Salters Lane Picture: Tony Flashman
Maidstone clung on to top spot in Ryman League Division 1 South after a tense 2-1 victory over Ramsgate on Easter Monday.
Alex Flisher put the Stones ahead 25 minutes from time at the Gallagher Stadium but Steve Watt found his own net for the second time in recent games with seven minutes remaining to leave the hosts staring at two dropped points.
However, in stoppage time, Stuart King fired his 24th goal of the season to keep United ahead of Dulwich Hamlet on goal difference, though Rams keeper Daren Hawkes suffered a suspected broken jaw in his attempt to prevent the goal.
Sittingbourne failed to build on their win over the leaders on Saturday as they crashed to a 3-0 defeat at third-placed Faversham Town in the Swale derby.
Luke Harvey opened the scoring before the break and notched another midway through the second, with Dave Botterill adding the third for the Lilywhites, who saw the eight teams chasing them in the table all fail to win.
Hythe Town remain fourth after a 1-1 draw at fellow play-off chasers Folkestone Invicta, who went sixth, just behind Ramsgate.
Dane Luchford looked to have given the hosts the points with a goal nine minutes before the break but Jake Hobbs grabbed the equaliser 12 minutes from time.
Whitstable Town stayed a point ahead of Herne Bay in the bottom half but were denied victory at Winch's Field.
Buster Smissen headed the visitors ahead after 10 minutes and Micheal Everitt hit the bar from a penalty after the interval, with Billy Bennett making the Oystermen pay with a low drive 20 minutes from time.
Thamesmead Town who took a stranglehold on third spot in Division 1 North with a 4-0 home win over Chatham Town.
A Chris Edwards free-kick and a Ryan Laker own goal made it 2-0 inside 15 minutes and the scoring was complete by half-time thanks to Rob Carter and a Stuart Zanone penalty.
Margate strengthened their grip on fifth place in the Premier Division with a 4-0 cruise at Cray Wanderers.
A Billy Burgess own goal just after the half-hour was quickly followed by a Ryan Dolby strike and Kezie Ibe added two more in the second half.