Lorenzo had two difficult seasons after his final world title, starting with losing the title lead and dropping back to third in his final season with Yamaha. However, he did win his final Yamaha race at Valencia. As Ducati's star signing, he endured a winless first season. After his contract was not renewed after another disappointing start to the 2018 season, he then won three races in quick succession as well as scoring multiple pole positions. However, while starting from pole position at Aragon, Lorenzo highsided in the first corner on the first lap, breaking his foot. This was a start of a spell of several serious injuries, which carried on into his time at Honda where he was a long way off his team mate, Márquez, who won his fourth consecutive title. In one month, during June 2019, he first crashed at Barcelona, taking out three riders in one corner as he fell, then had a serious test crash at the same track and finally fractured his back at Assen, which forced him to sit out several races.