The Spain international became the sixth fastest player to reach the milestone following his second half goal against Southampton on Sunday.
Chelsea’s Diego Costa scored his 40th Premier League goal in his 64th appearance; seven games earlier than Sergio Aguero.
The Spain international struck the Blues’ second goal in their 2-0 win at Southampton on Sunday evening, curling a 30-yard effort past Fraser Forster in the Saints net.
It was Costa’s eight Premier League goal of the season, putting Antonio Conte’s men just a point behind leaders Manchester City following four straight wins.
Costa is the sixth-fastest player to reach the milestone.