Tests have revealed that French tennis player Mathieu Montcourt died of a heart attack.
The 24-year-old, who was ranked 119 in the world, was found dead by his girlfriend in the stairwell of his Paris apartment on Monday.
The preliminary results of the autopsy showed that Montcourt had suffered a heart attack.
A statement from the player's PR agency Carre Final added that toxicology tests were negative.
"Mathieu was an enthusiastic young man, passionate, and extremely appreciated for his kindness and politeness," read a French Tennis Federation statement.
In June, Montcourt achieved his highest career ranking of 104 after reaching the second round at the French Open, where he lost to Radek Stepanek of the Czech Republic in four sets.
"Mathieu was a promising young player," added Patrice Dominguez, the FFT's technical director.
"We are totally devastated. Our first thoughts are with his family."
In August 2008, Montcourt was banned for eight weeks and fined £7,420 for betting on matches.
606: DEBATEThe Court of Arbitration for Sport later reduced his ban on appeal from eight to five weeks.
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