England international Fran Kirby set up striker Sam Kerr for Chelsea's second goal.
Manchester United earned their second win over Brighton & Hove Albion in five days as they booked a place in the League Cup quarter-finals with a 3-0 win at the Amex Stadium.
Jamie Vardy scored a hat-trick as Leicester came from behind to stun hosts Manchester City in a wild 5-2 win on Sunday.
City watched their Champions League dreams disintegrate inside 59 crazy seconds, beginning with a jaw-dropping miss from Raheem Sterling.
Cristiano Ronaldo did all he could as Juventus were knocked out by Olympique Lyonnais while Real Madrid handed Manchester City a sport in the quarter-finals.
- by Brian Homewood and Simon Evans
It was a frantic final day of the Premier League, with Champions League spots and relegation both still in play in a campaign like no other.
- by Steve Douglas
Watford has now been outscored 18-0 in its last three meetings with City with three different managers in charge.
- by Rob Harris
Manchester City have had their European ban overturned, but are still at loggerheads with other clubs.
- by Simon Evans