Born in Osimo, Lasca competed as a professional from 2012, when he joined the Caja Rural team after five seasons competing domestically for the Bedogni Natalini squad.

Lasca achieved his first victory as a professional,[1] by winning the second stage of the Circuit de Lorraine; he won the mass sprint finish in L'Hôpital, beating Steven Tronet of Auber 93 and FDJ–BigMat's Nacer Bouhanni to the line.

He also won the second stage of the Volta a Portugal later in the year, beating MTN–Qhubeka rider Reinardt Janse van Rensburg and Saur–Sojasun's Stéphane Poulhies in Trofa.

[2] Lasca remained with the team into 2013, taking a third place at the Clásica de Almería, before he became the first Italian winner of the Vuelta a La Rioja race in late March.

[3] He achieved his first stage race podium at the Vuelta a Castilla y León, where he finished third overall and was the winner of the points classification.