Chelsea had domintaed possession early on but had struggled to create anything of note against a stubborn West Brom rearguard.
That changed with 17 minutes on the clock though as Eden Hazard span away from Gareth Barry in midfield before firing low at goal.
Ben Foster got down to make the save, but he could only palm the ball into the path of Morata, who reacted quickest to tuck home to give Chelsea the lead.
Check out the goal for yourself below:
Goal fox in the box style for Morata!! #WBACHE #CFC #Chelsea pic.twitter.com/QYG3XSJ9Al
— Park The Bus (@FootballBus) 18 November 2017