Lorenzo Dalla Porta made his World Championship debut in 2015 as a replacement for Isaac Viñales in the Husqvarana Factory Laglisse team. The opportunity arose as he had raced for the Laglisse outfit in the FIM CEV Repsol Moto3™ Junior World Championship, and he split his time between the two series. In the CEV he took ninth in the championship, including a third place finish at Jerez. His adaption to the World Championship was rapid and he twice scored points, first with a stand out eighth in Silverstone and then again with 11th in Misano. Dalla Porta then won the FIM CEV Repsol Moto3™ Junior World Championship in 2016, as well as appearing on the world stage once again in a number of Grands Prix – replacing Philipp Oetll in Mugello, Jorge Navarro in Assen and then Romano Fenati from Silverstone on. For 2017, the Italian raced with the Pull&Bear Aspar Mahindra Team. After a more difficult year, 2018 saw him switch to Leopard Racing and take his first podiums, as well as a first race win. He remains with the same squad in 2019.