Diego Costa vows to discover scoring form for Spain after Chelsea striker is unconvincing against Macedonia

Misfiring Spain striker Diego Costa has promised there will be 'no lack of effort' on his part to discover his scoring form for his country. 

 

The 26-year-old, who plays his club football with Chelsea, put in another laboured performance during La Roja's narrow 1-0 Euro 2016 qualifying victory over Macedonia on Tuesday night.  

 

Costa has earned eight international caps so far since making his debut last year, but has only managed a paltry return of one goal. 

 

Speaking after the Macedonia game, Costa told Spanish newspaper AS: 'I've got a lot to improve and I've got to start scoring goals. There will be no lack of effort on my part.'

 

He added; 'I am always filled with ambition whenever I get called for the national team. On a personal level I am not happy because I didn't manage to score tonight although I'm happy with the victory. We've gained three points which are important for our qualification.'