Born in Madrid, Alonso Lopez shot onto the motorcycle racing scene in 2013 after winning the Valencian 80cc Championship. He took the national Spanish title one year later, before getting the chance to move to the PreMoto3 category on a 250cc machine at the age of 13. He continued his winning streak to take the Championship in 2015. For the 2016 season, Lopez made his debut in the Moto3™ Junior World Championship with the Junior Team Estrella Galicia 0,0 and claimed two second-place finishes and finish fifth in the final standings. 2017 saw Lopez make another step forward to claim his first World Championship victory at Le Mans before taking a second win at the next round in Barcelona. One more win and two podiums would follow, before Estrella Galicia 0,0 promoted the 16-year-old to the Moto3™ World Championship for 2018. The season started well and Lopez was close to the podium at Jerez, but the latter half of the season was more difficult and he'll want more in 2019, remaining with the team.