LuÃÂs Augusto Queiroz Miguel (born 26 February 2009), commonly nicknamed as "Guto", is a Brazilian tennis player. He has a career-high ATP doubles ranking of world No. 191 achieved on 30 March 2026 and a singles ranking of No. 1,188 reached on 16 March 2026.
Miguel has won two ATP Challenger titles in doubles.
Miguel was born and raised in Goiânia, Brazil. He began playing tennis at the age of four, following in the footsteps of his older brother, LuÃÂs Felipe Miguel, who is also a competitive tennis player. The brothers frequently compete together in doubles on the professional tour.
He is coached by Santos Dumont and Pedro de Paula at the Fly Sports Academy in Goiânia. Due to his rapid rise in the junior rankings, he also spends significant time training in Europe, primarily at the Mouratoglou Tennis Academy in France.
Miguel had significant results on the ITF junior circuit, holding a singles win-loss record of 92âÂÂ30 as of February 2026.
In July 2023, he reached the semifinals in the boys' U14 event at Wimbledon, where he lost to home favourite and eventual champion Mark Ceban.
In May 2025, he won the Astrid Bowl, a top junior-level event hosted in Charleroi-Marcinelle, Belgium. A few months later, Miguel won a J300-level event in Repentigny, Canada, prior to the US Open. At the 2025 US Open, he reached the semifinals in singles, where he lost to fifth seed and eventual runner-up Alexander Vasilev. Later that season, he won the Yucatán Cup in Mérida, Mexico, becoming the first Brazilian player to lift a J500 trophy since Orlando Luz in 2015.
In January 2026, Miguel won the J300 Traralgon International in Australia in both singles and doubles, becoming the first South American champion of the event. He followed this by reaching the quarterfinals of the Australian Open Boys' singles, where he lost to seventh seed and eventual champion à ½iga à  eà ¡ko.
He reached an ITF junior combined ranking of world No. 3 on 26 January 2026.
In July 2025, Miguel won his first professional title at the M25 São Paulo, a Futures-level event, alongside his brother LuÃÂs Felipe Miguel. The pair won a second title a few weeks later at the M15 Joinville.
In October 2025, at the age of 16, Miguel lifted his first ATP Challenger title in doubles at the 2025 Costa do SauÃÂpe Open. Partnering with compatriot Eduardo Ribeiro, the pair defeated second seeds Gonzalo Escobar and Miguel ÃÂngel Reyes-Varela in the final.
Miguel received a wildcard to the main draw at the 2026 Rio Open, after Gaël Monfils's withdraw due to an injury, making his debut ATP Tour debut. He lost in the first round to qualifier Vilius Gaubas in three sets. He also received an invitation to play doubles in the qualifying with compatriot Gustavo Heide. They entered in the main draw as lucky losers and won against fourth seeds Evan King and John Peers to reach the quarterfinals, where they lost to German pair Jakob Schnaitter and Mark Wallner.