Jersey Scottish move seven points clear at the top of the Dandara Premiership after a 37th-minute Paul Aitkin goal saw off St Peter, who stay second.
Rozel Rovers held Jersey Wanderers to a goal-less draw at Le Couvent, which keeps Wanderers in third place, a further point adrift.
St Ouen's single goal win at home to Tower puts them up to fifth while Tower remain two points adrift at the foot.
Elsewhere, St Pauls and Grouville shared four goals.
The result keeps St Pauls fourth, and Grouville seventh, now two points above the drop zone.