Harimau Muda won the battle of the youngsters against Courts Young Lions last Sunday with a 3-1 victory, with Jonathan Toto's scorching long-range shot being only the second goal that the Malaysians have conceded all season.
The Young Tigers have largely exceeded coach Ong Kim Swee's conservative prediction of a fifth-place finish and are yet to be beaten in the league.
They visit SAFFC at the Choa Chu Kang Stadium on Sunday and the Warriors take to the field appearing to have recovered from their horrific early start, having now registered two straight wins.
Courts Young Lions are dwelling at the foot of the table and face the impressive Balestier Khalsa on Sunday, with the Tigers currently fourth in the league and seeking to bounce back from their defeat to Geylang United in their last match.
On Thursday, defending champions Tampines Rovers got their title defence back on track after beating Home United 2-0, while Tanjong Pagar United picked up their first win of the season with a 1-0 win over Geylang United.
Sunday's S.League Fixtures
SAFFC vs Harimau Muda
Courts Young Lions vs Balestier Khalsa
Thursday's S.League Results
Friday's S.League Results