Chelsea beat Middlesbrough 1-0 at the Riverside stadium to move into first place in the Premier League.
Blues star striker scored the only goal of the game just four minutes before the half-time whistle reacting first to a goal mouth scramble to poke the ball past the line.
Costa has now scored 10 goals and provided three assists for Chelsea in the league this season.
Diego Costa vs Middlesbrough (1-0)
His 10th goal of the season!! pic.twitter.com/8SvMVmUInU
— Chelsea Vines (@CheIseaVines) November 20, 2016
The Blues take on rivals Tottenham next on Saturday 26 November at Stamford Bridge.