Juan Martin del Potro is robbed at the train station in Paris on Saturday while preparing to go to London for the ATP World Finals.

"I was checking in for the train and I [was] asked for an autograph. I turned around to sign it and within 20 seconds [my bag] was stolen," del Potro said in a statement released through his publicist.

Del Potro lost his passport, money and other personal effects in the theft, including "my rosary which was blessed by Pope Francis, that I carried everywhere."

"[The rosary is] what matters most to me," said Del Potro, who met the Pope during the tournament in Rome earlier this year.

Del Potro has arrived in London and has been placed in round robin group B with Novak Djokovic, Roger Federer and Richard Gasquet.

