After leaving Texas Tech University, Pereira returned to Chile and began training again with Eduardo Miquel. On the
2020–21 Korn Ferry Tour, he won the
Country Club de Bogotá Championship in February 2020. With back to back victories at the
Rex Hospital Open and
BMW Charity Pro-Am in June 2021, he earned an instant promotion to the
PGA Tour. He became just the 12th player in the developmental tour's 32-year history to earn the automatic three-win promotion, and the first since
Wesley Bryan in 2016. In August 2021, Pereira finished in a tie for 3rd place at the
Olympic Games. He lost in a 7-man playoff for the bronze medal. At the
2022 PGA Championship, he entered the final round with a three-shot lead over
Will Zalatoris and
Matt Fitzpatrick, at 9-under-par. However, he struggled throughout the day, and reached the par-4 18th hole at
Southern Hills at 6-under, with a one stroke lead over Zalatoris and
Justin Thomas. Having missed his birdie putt at 17 by mere inches, he was aggressive off the tee, ultimately finding the right hand side creek, leading to a double bogey. He ended up tied for third place, as Thomas defeated Zalatoris in a playoff. Pereira was the third player over the previous 20 years to double-bogey the 72nd hole in a major and finish one shot out of a playoff;
Phil Mickelson and
Colin Montgomerie both did it at the
2006 U.S. Open. Pereira qualified for the International team at the
2022 Presidents Cup; he played three matches, tying one and losing two. In February 2023, it was announced that Pereira joined
LIV Golf and will participate as a team member of Torque GC, alongside team captain and fellow Chilean
Joaquín Niemann. Pereira finished runner-up at
LIV Golf Greenbrier in August 2023. He also three other top-5 finishes and placed at No. 8 in the
2023 LIV Golf League seasonal rankings. In the
2025 LIV Golf League season, he finished No. 51, Pereira made over US$11.5 million during his three seasons on LIV Golf. In December 2025, Pereira announced his retirement from professional golf. He stated: "I spent many years living away from home, in another country, countless weeks in hotels and airports. Now, the time has come to pause. Chile is my place in the world, and my family is my reason for being." ==Personal life==