Rafael Nadal warned he knew how to fix his errors before his French Open title defence after crashing in the quarter-finals of the Rome Masters on Saturday, the final warm-up before Roland Garros.
The nine-time Rome winner slumped 6-2, 7-5 on a humid night in the Italian capital to Argentine Diego Schwartzman, a player the second seed had beaten in all nine of their previous clashes.
It was Nadal's last chance to tune-up before his bid for a 13th French Open, and record-equalling 20th Grand Slam to match Roger Federer in just over a week.
"It's a completely special and unpredictable year," said the 34-year-old.
"I'll probably go back home and then let's see what's going on. I did my job here.
"I fought until the end. But losing that many serves, you can't expect to win a match.
"Something that I have to fix. I know how to do it.
"I'm going to keep working and keep practising with the right attitude and try to give me a chance to be ready.