The death of Italian rider Marco Simoncelli shocked the motorcycle and car racing world on Sunday, leading many top sporting figures and fans to pay tribute to the young rising star.
Simoncelli died on Sunday after a motorcycle crash during the Malaysian MotoGP when he fell on lap two of the Sepang Circuit race and was struck by two riders. Medics tried to resuscitate Simoncelli at the Sepang Circuit but he succumbed to his injuries.
Here's what those in the motorcycle world had to say.
MotoGP extends its deepest condolences to Marco's family, friends and team at this tragic loss. - MotoGP
Devastated and heartbroken. Thank you for all your kind words. - HRC Honda
Sometimes life just don't make sense... RIP #58, you were a star on and off track. We are all going to miss you. - Nicky Hayden, Ducati MotoGP rider.
RIP Marco. A special talent that will be missed... Thinking of your loved ones, and all the MotoGP paddock. - Mark Webber, Red Bull Formula 1 driver.
All at Rizla Suzuki are deeply affected by today's tragic events and send their deepest condolences to Marco's family and friends during this time of great loss. - Suzuki MotoGP team
Thoughts with Marco Simoncelli's family and friends today after the MotoGP rider succumbed to his injuries after terrible crash this morning. - Williams Formula 1 team
I can't believe MotoGP star Simoncelli has died in a crash, another great talent lost today. - Heikki Kovalainen, Lotus Formula 1 driver
Today we are left devastated. Our thoughts and prayers are with Marco's family at this terrible, terrible time, and with his team. Words can do no justice to the emotion we are all feeling. The MotoGP family has lost one of its bright stars, a genuine character whose larger-than-life persona, charisma and unstoppable spirit were infectious, and we've all lost a great friend. We worked closely with Marco for his first two years in MotoGP and it was clear that he was a true racer, something he proved again and again this season. Determined to the end, and a great showman. His ascent through the field in just two seasons has been fantastic to watch, testament to his raw talent, ability and dedication to the sport he so loved. We remember fondly the tenacity and spirit with which he raced, and he will be sorely, sorely missed. - Taka Horio - General Manager, Bridgestone Motorsport Department
Others have taken to MotoGp's Web site with their tributes.
The entire Roberts Family is deeply sadden by the news about Marco. We wish to send our condolences to his family, friends, fans and MotoGP. We will never forget him! - The_Roberts_Family
We are deeply saddened at the passing of Marco Simoncelli. He was one of the most charismatic figures in the World Championship and had a fantastic future ahead of him in MotoGP. Marco was one of the most popular riders at the MotoGP event at Indianapolis, as his talent on the motorcycle and his ability to connect with fans both were very special. We extend our sincere sympathies to his family, team and fans. - Jeff Belskus, Indianapolis Motor Speedway Corporation President and Chief Executive Officer
I am in shock. We are bike riders and we are aware that there are risks involved with what we do, but we also know that every day our safety is looked after more and more by the organisers. These past few years have seen a huge amount of work done to try and make our job even safer. Despite this, there are moments in which misfortune can lead to tragedy -and we saw this happen today with Marco Simoncelli. Today is another tough day for motorcycle racing. We have lost a great companion, and I will remember Marco as a great rival with whom had some fantastic battles in the past. - Hector_Barbera
What has happened today is immensely sad. It should be said that every Friday before a Grand Prix, the Safety Commission convenes at 5pm with all the MotoGP riders to evaluate safety issues at all Grand Prix circuits. Marco lost the front end and attempted to save the crash, but unfortunately the inertia of the bike took him onto the inside of the corner just when Edwards and Valentino were passing. There was nothing that they could do to avoid him. Today is a tremendously sad day for the entire paddock and for those who love motorcycle racing. - Jorge_Martínez_Aspar
Simoncelli's death comes one week after IndyCar drive Dan Wheldon crashed and died in a 15-car accident during the IndyCar finale at the Las Vegas Motor Speedway.
You can send leave your tribute here.
Watch Simoncelli's accident below.