Leanne Kiernan struck again for West Ham as they earned their first Women's Super League win of the season against Yeovil.
The Cavan 19-year-old, who joined the Hammers from Shelbourne in July, opened the scoring for the hosts in the second half, firing home from close range after Yeovil failed to clear a corner.
Ellie Mason levelled for Yeovil before Rosie Kmita hit back for West Ham, volleying a 79th-minute winner.
Manchester City rebounded from a bizarre 50-yard own goal to end Birmingham City's 100% start to the new Women's Super League season.
The visitors fell behind in incredible fashion after just seven minutes when Abbie McManus played a long-range back-pass which bounced over goalkeeper Ellie Roebuck and found the net.
Meaghan Sergeant increased Birmingham's advantage with a header before half-time, but the visitors struck back with goals from Caroline Weir and Nikita Parris.
And City, smarting from their midweek Champions League exit at the hands of Atletico Madrid, completed their comeback through Tessa Wullaert's deflected effort on 73 minutes.
Defending champions Chelsea earned their first victory of the new campaign with a 2-0 home triumph over Brighton.
Chelsea had drawn their first three games of the season 0-0, but they finally broke the deadlock just past the half-hour mark when Fran Kirby swept home from a Magda Eriksson through-ball.
Erin Cuthbert added Chelsea's second before the break to leave Brighton still searching for their first point and goal of the season.
Brooke Chaplen scored the only goal of the game in the 36th minute as Reading continued their encouraging start to the new season with a 1-0 win at Liverpool.
The home side were reduced to 10 players just before the hour mark when had Rhiannon Roberts sent off for two bookable offences.