Guido Iván Justo, born in Adrogué, Argentina, achieved a significant milestone in his tennis career at the age of 28 by winning his first Challenger title at the AAT Challenger IEB+ Tigre I. He triumphed in a competitive final against Lautaro Midón, with a final score of 4-6, 6-3, 6-0. This victory not only brought him his first trophy but also marked a pivotal moment in his professional journey, as he had been striving on the lower tiers of the ATP circuit for several seasons.

The match took place in front of approximately 400 spectators at the Náutico Hacoaj club, where Justo displayed remarkable resilience and skill. Coming into the tournament ranked 347th, his impressive performance propelled him to a ranking position within the top 275, showcasing his growth and potential in the sport. Justo's victory is a testament to his determination and hard work over the years, marking a resurgence in his professional tennis career.

The celebratory atmosphere following Justo's victory included a field invasion by enthusiastic fans, reflecting the local support and excitement surrounding his achievement. As he embarks on a new chapter in his career, Justo's win serves as an inspiration for many aspiring athletes, emphasizing that perseverance can lead to success, no matter the age or challenges faced along the way.