Saturday afternoon's early start in La Liga pitted champions Atletico Madrid against league leaders Real Madrid at the Vicente Calderon.
The home side led 2-0 at the interval following goals from Tiago and Saul Niguez.
Real improved in the second period, but they conceded a third after 67 minutes when Antoine Griezmann converted from inside the box after smart work from Saul.
Atletico were not finished, however, and added a fourth late on through Mario Mandzukic to complete a thumping victory.
Read how it all unfolded in Sports Mole's minute-by-minute live commentary of the action below.