Two goals from Jack Morton earned Ducklington all three points and moved them into third after their 2-0 Premier Division win over hosts Carterton Town A in the Witney & District FA.
Meanwhile, in Division 1 Spartan Rangers went down 3-1 to Hailey Res.
Hailey increased their lead at the top to six points with goals from Mo Semlali, Kristian Collis and John Andrews.
Matt Townsend pulled one back for the hosts.
Combe dropped their first Division 2 points of the season after a 2-2 draw with bottom side Witney Royals Res.
Chris Betreen scored both goals for Combe but Richard Sims and Liam Readhead secured the hosts a point.