Atlético Madrid have been crowned La Liga champions after coming from behind against Real Valladolid in dramatic fashion on the final day of the season. The former Barcelona striker Luis Suárez played a key role, scoring Atlético winner in a 2-1 victory. The forward was sold by Barcelona at the start of the season. 'I wanted to prove that I can still play at the top level', he said. 'I am going to be always grateful for Atlético Madrid for trusting me'