He won the silver medal in the
long jump at the
2017 IAAF World U18 Championships in
Nairobi, Kenya, finishing behind teammate
Maikel Vidal. He won gold at the
2018 Summer Youth Olympics long jump competition in
Buenos Aires, Argentina with a jump of 7.79 metres. Later that year, and still aged 16 years-old, Lescay achieved a new personal best of 7.91 meters in
Havana. It was the fourth longest men's senior outdoor long jump worldwide in 2020. It placed him tenth on the Cuban all-time list, as well as the sixth overall for an under-20 athlete of-all-time. Lescay was included in Cuba's squad for the delayed
2020 Tokyo Olympics in 2021. At the Games, he jumped 7.69 metres without professing through to the final. He defected from Cuba in 2022 after taking part in a competition in
Belgrade, Serbia. He started to compete in Spain for Facsa Playas de Castellón athletics club. He jumped a new personal best of 8.35 meters on June 23, 2024, placing him in sixth position in the overall world rankings for that year. From January 2025, he was cleared to compete internationally for Spain. He finished fourth with a jump of 8.06 metres at the Diamond League event at the
2025 Golden Gala in Rome on 6 June 2025. In September 2025, he competed at the
2025 World Championships in
Tokyo, Japan, qualifying for the final and placing eighth overall. ==Personal life==