Career
Juniors Carreño reached as high as Number. 6 in the combined junior world rankings in February 2009. Junior Slam results: Australian Open: 1R (2009) French Open: 2R (2009) Wimbledon: - United States Open: 1R (2008) Pro tour His first appearance in an Association of Tennis Professionals tour tournament was in Barcelona in 2011, where he lost in the first round to Benoît Paire.
133.
He missed the majority of the 2012 season due to injury, and underwent surgery on his back later that year. Carreño returned to action towards the latter stages of 2012, after five months of recovery, and played in four Futures tournaments to end the year, all of which were in Morocco, although he did not progress past the semi-final stage in any of the four. He ended the year with a singles ranking of northern
715.
After a strong start to the opening three months of 2013, winning 42 out of 43 matches on the International Tennis Federation Circuit, Carreño entered the qualification stage of the 2013 Grand Prix Hassan II in April, held in Casablanca, Morocco. He lost in the following round to eventual runner-up, Kevin Anderson. Later on that month, Carreño reached the semi-final stage of the 2013 Portugal Open, again progressing through the qualification rounds, before ultimately losing to Stanislas Wawrinka in three sets.
Carreño participated in his first ever Grand Slam tournament when he was a qualifier at the 2013 French Open.
He currently resides in Barcelona. Wins (21) Doubles.