Real Madrid got their Champions League defence off to a winning start thanks to a comfortable victory over Roma.

The Spanish side, looking to win the tournament for the fourth year in a row, dominated but were frustrated until Isco curled home from 25 yards out at the end of the first half.

Gareth Bale added a second when he ran onto Luka Modric's excellent through-ball and slotted home.

And Mariano Diaz curled home late on from 20 yards for a deserved third.

Last season's semi-finalists Roma were second best throughout, although Cengiz Under forced a good diving save from Keylor Navas.

However, these two teams will both be favourites to progress from Group G, which also contains Czech side Viktoria Plzen and CSKA Moscow. The Russian visitors came from 2-0 down to draw their opening game 2-2.