A 3-0 win against Doncaster Belles made Everton favourites to seal the Women's Premier League second spot and, with it, entry into next season's Uefa Cup.
A second European place is available to an English team as Arsenal will be in next season's competition as holders after their win over Umea in the final.
Everton are now third, a point behind Charlton following the Addicks' 3-0 win at Cardiff, but with a game in hand.
At the bottom of the table, Fulham went down, despite drawing 1-1 at Blackburn.
WOMEN'S PREMIER LEAGUE
Everton 3-0 Doncaster Rovers Belles
First-half goals by winger Michelle Evans and striker Jody Handley put the Toffees on the way to a vital victory.
And midfielder Fara Williams, with her 19th goal of the campaign, wrapped up the points in the closing stages.
Cardiff City 0-3 Charlton Athletic
Sinead Bowyer, Eni Aluko and Casey Stoney with a penalty were the scorers as Charlton produced a victory that keeps them in with an outside chance of finishing second.
But the result left Cardiff second from bottom and needing to win one of their final two games to avoid relegation.
Blackburn Rovers 1-1 Fulham
An early goal by Caroline Dixon earned the point that ensured Blackburn held on to fourth place.
But they were denied victory when bottom team Fulham, following their shock 1-1 draw with Charlton on Thursday evening, levelled through Charmaine Benham.
Birmingham City 0-2 Leeds United
Leeds bounced back from a dreadful run of seven successive League and Cup defeats to leapfrog Chelsea into fifth place.
Karen Burke shot the visitors ahead through a first-half penalty and Melissa Sutcliffe hit the clincher three minutes from time.
To complete an unhappy afternoon for Birmingham, captain Laura Bassett was sent off for collecting a second yellow card deep into stoppage time.
Bristol Academy 2-1 Chelsea
Two goals by striker Justine Lorton gave Bristol the victory that lifts them up to sixth in the table.
Dunia Susi cancelled out Lorton's first strike but the former Arsenal and Charlton player's winner meant that Chelsea slipped to seventh.