Sometimes a picture says it all.
Diego Costa, with full beard, has his fist clenched. He looks ravenous, his face locked in a savage grimace. Out of focus, his Atletico Madrid teammate Antoine Griezmann is running towards him to celebrate Costa's goal, the opening score in a 5-2 win against Sevilla.
The score came in the 28th minute of the match. Costa pounced on Ever Banega—who had foolishly been given a rolled pass with his back to Costa by Sevilla's goalkeeper Sergio Rico on the edge of the box. Costa dispossessed Benega, and slotted the ball beyond Rico to score.