A DECADE ON, SEPANG 2015 STILL SHADOWS ROSSI’S LEGACY

Ten years on, Sepang 2015 remains a defining rupture in MotoGP: a championship showdown overshadowed by Valentino Rossi’s accusations against Marc Marquez, their on-track collision and the fallout that followed.

Rossi arrived in Malaysia with an 11-point advantage over Yamaha team-mate Jorge Lorenzo and his first chance to clinch the title since 2009. His season had been strong—four wins and a podium at every race through the first 13 rounds—but Lorenzo had become the faster rider, winning seven times. The weekend also began under a blanket of smoke from Indonesian wildfires. Officials monitored pollution and visibility, with road transport to hospital considered if the medical helicopter could not fly.

The tension rose at Thursday’s press conference. Rossi said he had watched the Australian Grand Prix repeatedly and believed Marquez had not simply been racing to win. “I think that his target is not just to win the race but also to help Lorenzo,” he said, adding that Lorenzo had gained “a new supporter.” Marquez rejected the claim: “Of course not. Of course, I did my race.” He said the Honda’s front tyre had been difficult to manage and argued that passing Lorenzo on the final lap was evidence he had been pursuing victory. Lorenzo joked that Marquez had helped him “mainly in the last lap.”

Rossi’s suspicions centred on Marquez’s pace and positioning during Australia’s close, multi-rider battle. He later presented lap-time data to Italian media and alleged Marquez had slowed to hinder him and favour Lorenzo, linking the supposed motive to their earlier clashes in Argentina and Assen. Marquez said he would help another rider only if that rider were his team-mate. Ducati’s Andrea Iannone also suggested Marquez had “played with us,” while describing the Australian race as an exceptional fight.

The accusations were especially striking because Rossi had defended Iannone after fans abused the Ducati rider online for passing him in Australia. “They are not my real supporters,” Rossi said, calling the comments stupid and insisting Iannone had simply raced normally.

In Sunday’s race, Rossi and Marquez fought intensely as Dani Pedrosa and Lorenzo moved ahead. On lap seven, they ran side by side into the penultimate corner. Rossi forced Marquez wide; contact followed and the Honda rider crashed. The incident became known as “the kick,” though the available footage does not conclusively establish whether Rossi kicked Marquez. Rossi later acknowledged deliberately running him out of room to stop the attacks, but said a collision was not his intention. Stewards imposed three penalty points, taking his season total to four and triggering a back-of-the-grid start for Valencia under the rules then in force. A point earned earlier at Misano meant the Sepang sanction had that consequence.

Rossi started the finale from 26th and finished fourth; Lorenzo won the race and the championship. The dispute intensified, with Lorenzo seeking Rossi’s exclusion from the Sepang results, Yamaha’s celebrations muted and Dorna warning riders to take care around the title contenders in Valencia. Rossi maintained that he had been robbed and skipped the awards gala. MotoGP subsequently overhauled its stewarding structure.

Rossi’s 2015 campaign remains a remarkable one, but his continued insistence that Marquez acted to sabotage him has kept the feud alive. Marquez later matched Rossi’s career total of world titles across all classes. The question of whether Rossi genuinely believed his conspiracy claims—or made a high-stakes accusation under championship pressure—remains unanswered.