Real Madrid’s title hopes suffered a further blow after they were beaten by 10-man rivals Atletico Madrid at the Bernabeu.
Jose Gimenez gave the visitors a shock lead, shortly after Angel Correa was sent off for elbowing Antonio Rudiger.
But youngster Alvaro Rodriguez earned Real a point with his first goal for the club.
The home side are seven points behind leaders Barcelona going into Sunday.
Carlo Ancelotti’s side dominated the first half but there were few clear openings before the break.
Marco Asensio stung the palms of Jan Oblak at one end, before Yannick Carrasco fired straight at Thibaut Courtois at the other end as both sides struggled to find a breakthrough.
The game sprang to life in the second half when half-time substitute Correa was shown a straight red card after catching Rudiger in the chest with a draping arm.
As Real struggled to press home their numerical advantage, substitute Gimenez headed home Antoine Griezmann’s free-kick in the corner to leave the visitors minutes away from a first victory at the Bernabeu since 2016.
But Rodriguez rose to head Luka Modric’s corner over Oblak with five minutes remaining to become the youngest player to score in a Madrid derby in the 21st century.
Eduardo Camavonga tested Oblak in the closing stages, but Atletico held on to move two points clear of fifth-placed Real Betis.
Barcelona can open up a ten-point lead at the top of La Liga with victory at AlmerÃa on Sunday.
The game was Diego Simeone’s 612th as Atletico manager in all competitions – equaling the club record held by the late Luis Aragones.
Atletico confirmed after the game that left-back Renaldo suffered an anterior cruciate ligament rupture in a first-half clash with Federico Valverde, which is likely to rule him out for the rest of the season.
