Substitute Rinsola Babajide sealed a second FA WSL Continental Tyres Cup victory for Millwall Lionesses as they overcame Watford Ladies.
Ashlee Hincks opened the scoring with a speculative effort that deceived keeper Trippoli Witney.
Millwall doubled the advantage as the match moved into first-half injury time, with Fliss Gibbons curling home.
Watford got a goal back in the 55th minute when Anneka Nuttall nodded in expertly from a corner.
That only spurred the visitors on, with Dionne Lennon adding a third for the Lionesses.
The match was marred 15 minutes from time by a leg injury to Millwall’s Jordon Butler, before Stacie Donnelly grabbed a goal back for Watford almost immediately, but But Babajide wrapped up the win with a fine solo effort in stoppage time.