Reigning champions Chelsea made it two wins from two at the start of the Women’s Super League season, going top of WSL 1 with victory at Arsenal.
Fran Kirby scored both goals, one in each half, to send the Gunners to a second defeat in three WSL games.
The England forward nipped in to loft over goalkeeper Sari van Veenendaal for her first, with Jemma Rose unable to prevent her shot crossing the line.
And Kirby smashed in a second from three yards after a goalmouth scramble.
Chelsea lead the table on goal difference, ahead of Manchester City, who have also won their opening two games.
Liverpool will join the pair on six points from their first two outings if they beat Sunderland on Saturday.
Arsenal, for whom Van Veenendaal made a series of fine saves before Kirby’s second settled the contest, will meet Chelsea again in the Women’s FA Cup final at Wembley on Saturday, 14 May.
Arsenal 0-2 Chelsea as it happened
Chelsea forward Fran Kirby told BT Sport: “We came here to win the game. We want to win every game we can.
“We knew we had to get a result here and happily we did.
“The start of the season has been really good. Overall we’re happy but obviously we just need to keep going.”
Arsenal boss Pedro Martinez Losa told BT Sport: “It was a poor performance. We made it easier for the opponent.
“With performances like that we can’t think about winning the league.
“Against a good team like Chelsea you can’t make mistakes. We will try to come back, analyse and do better for the next game.”