Guido Petti Pagadizábal

Guido Petti Pagadizábal (born 17 November 1994) is an Argentine professional rugby union player who plays as a lock and flanker for Prem Rugby club Harlequins and the Argentina national team.

Club career Guido played with San Isidro Club in the Torneo de la URBA in his homeland. In 2016 he joined the Jaguares, Argentina's Super Rugby team. In 2020 he moved to France to play for Bordeaux Begles in the Top 14. In May 2025, he started the 2024–25 Champions Cup final at flanker, playing the entire game as they defeated Northampton Saints 28–20 to win the club their first ever trophy. In June 2025, he scored a try in the Top 14 final, his last game for the club, as Bordeaux were eventually defeated by Toulouse 39–33 in extra time.

In February 2025, he signed with Premiership Rugby side Harlequins for the following season. In October 2025, he made his debut in a 20–14 victory against Saracens. In April 2026, he scored his first try for the club against Sale Sharks.

International career Petti was a member of the Argentina Under-20 side which competed in the 2013 and 2014 IRB Junior World Championships, he also represented the Argentina Jaguars side in 2013 and 2014 and played for the Pampas XV during their 2014 tour of Oceania.

He was part of the national team that competed at the 2015 Rugby World Cup.

Petti was a starter for the national team on 14 November 2020 in their first ever win against the All Blacks.

Honours Bordeaux Bègles 1× European Rugby Champions Cup: 2025