Riverside pulled off a shock win in the quarter-finals of the Under 11 PFA Cup.
The Division Two outfit overcame Division One boys Netherton 5-4 on penalties after the tie finished all square at 1-1.
Substitute Johnny Halfhide-Smith scored for Netherton with Alfie Redgrave replying for Riverside.
Joining Riverside in the semi-final line-up will be One Touch, Arsenal Soccer School and Thurlby.
Runaway Division One leaders One Touch overcame closest rivals Deeping Blue 4-1 and had Joshua Ford and Rhys Holmes netting two goals apiece.
Thurlby also won 4-1 - against Park Farm Black - thanks to goals from Dominic Hill (2), Leonard Lock and Alex Sinfield.
Arsenal Soccer School beat Holbeach 1-0 thanks to a Joseph Purbrick strike.
In Under 11 Division Four, there’s no stopping Leverington.
The unbeaten league leaders thumped second-placed March Soccer School Red 4-0 thanks to a treble from Daniel Roberts and another goal from Reily Tegerdine.
Tegerdine has netted 30 times this season with Roberts not far behind on 26.
Leverington now lead by two points from March with a game in hand.
Biggest win on Sunday belonged to Under 12 Division Three side Netherton Phoenix.
They beat Tydd St Mary 12-0 in a Hereward Cup clash through goals by Emmanuel Ochube (4), Daniel Laxton (2), Dominic Wright (2), Owen Deeks, Joseph Garnett, Efraim Romanos and Mohammad Ibrahim.
Northern Star made it seven wins from seven games in the Under 13 9v9 division by beating Pinchbeck 7-0. Ashton Bennett-Williams, Nathan Rudman and Bradly Simpson all found the back of the net twice.
Deeping Claret, who have played two more games than Star, lead the way in this division by three points.
They beat March Soccer School 3-0 on Sunday with goals by James Russell (2) and Owen Jacobs.
Netherton are third behind Star on goal difference and they won 9-0 against Stanground. Alastair Hamilton fired a hat-trick and Kieran Bellamy and Sulaiman Saleem both bagged a brace.
In Under 14 Division One, Deeping Rangers Blue gave their title bid a massive boost by seeing off closest rivals Grantham 2-0.
There was also a top-of-the-table clash in Under 14 Division Two featuring Voyager and Stanground and it was second-placed Stanground who took the honours 4-2.
On target for Stanground were Matthew Robson (2), Dominik Szuster and Stewart Barrand with Callum English and Charlie Webb the Voyager scorers.
Voyager remain top but their lead has been cut to three points and Stanground have a game in hand.