Kumaritashvili competed in five World Cup races this season, finishing 44th in the world standings.
Georgia luger Nodar Kumaritashvili died in a crash on the eve of the Games.
Georgian Olympic officials say Kumaritashvili's death was caused by a lack of attention to safety standards.
Georgian Nodar Kumaritashvili's sled flipped and he smashed into a steel pole at the Whistler Sliding Centre, killing the 21-year-old.
After intensive rehabilitation, Rosen made the team for his second Winter Games and was taking part in the same training session when Kumaritashvili crashed.
The start of the Games was overshadowed by the death of Georgian luger Nodar Kumaritashvili and there have been ongoing problems caused by unsuitable weather.
Unanswered questions still surround the accident that led to Kumaritashvili's death.
Kumaritashvili's sled struck the inside of the track's last turn during his sixth and final training run, sending his body into the air and over a concrete wall.
Early on the opening day, a Georgian athlete, Nodar Kumaritashvili, was killed during a practice run when his luge flipped over, throwing him into a steel pole and raising questions about the track's safety.
That was despite him crashing in both the two and four-man competitions on the same Whistler track which had claimed the life of Georgian luger Nodar Kumaritashvili on the day of the opening ceremony.
Medical staff at the track and doctors at a local hospital tried to resuscitate Kumaritashvili, part of a seven-strong Georgian team, but the country's Olympic delegation later confirmed he had died as a result of his injuries.
In the build-up to the Games several teams had raised concerns about the safety of athletes, who regularly exceed 90mph as they compete, though Kumaritashvili crashed at a corner which had not been previously identified as a danger area.
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