Real Madrid's Brahim Diaz scored a second-half winner as the hosts edged out neighbours Atletico Madrid 2-1 in a scrappy first leg of their Champions League Round of 16 tie on Tuesday after Julian Alvarez had cancelled out Rodrygo's opener.

It was a stuttering capital derby between bitter rivals who at times looked to be playing within themselves, seemingly conserving some energy for what is likely to be a compelling return leg at Atletico's Metropolitano Stadium next week.

Real started on fire when Rodrygo scored a fine opener four minutes after kick-off but Atletico slowly got into the game and Alvarez equalised with a stunning strike in the 32nd minute.

Real got the winner in the 55th through Diaz, who worked his magic to find a tiny pocket of space inside a crowded box and slotted a low, angled strike inside Jan Oblak's far post.