Sam Kerr scored a brilliant hat-trick to fire Chelsea past Paris FC 4-1 in the Women's Champions League group stage at Stamford Bridge. Having drawn their opener with Real Madrid, Chelsea kick-started their European campaign thanks to Kerr's goals - although Emma Hayes' side were not at their best. Kerr was teed up by Lauren James' superb pass in the first half before poking in Johanna Rytting Kaneryd's cross after the break. She completed her hat-trick with an audacious looping chip from outside the box in the 55th minute, while substitute Sophie Ingle added a fourth goal in stoppage time. Elsewhere, Roma brushed aside Ajax's challenge with a 3-0 drubbing in Rome on Friday. Valentina Giacinti scored two early goals (5th and 14th minutes) and Manuela Giugliano netted one in the second half (47th minute) to complete the easy win.