The striker has had to pull out of the most recent Spain squad, again.
However, not every avenue of his career appears to be on the up and up – as his international career with Spain took another blow this week.
Costa has struggled with his adopted nation, scoring just once since switching allegiance from Brazil, in a recent European Championship qualifier against Luxembourg.
Costa, who switched nationality to play for Spain just prior to the World Cup in his country of birth, has now been struck again by his Spanish curse.
He had to pull out of the most recent Spain squad for games against Ukraine and the Netherlands with a hamstring injury suffered with Chelsea.
He has now spoken to Marca about the problems he has faced with international selection.
“My history with the national team has not yet started.
“I have not done anything yet. The selection is something that I have in mind.
“Sorry I cannot give what I wanted. Something always happens when approaching Spain. It bothers me personally, but I wish that to end…
“I desire to succeed. The coach and co bet for me. They deserve to have me return the trust they have placed in me.”
It is clear that Costa wants to be a hit for Spain and his current record of one goal in seven appearances certainly looks bad when you consider his excellent scoring records with Rayo Vallecano, Atletico Madrid and Chelsea.
He, along with the Spanish fans, will hope he soon lifts the hex on his international career.