Lucas Barbosa and Patrick Gaudio met 5 times on record, with Barbosa holding a 3-2 edge. All 5 meetings happened in a narrow window between 2017 and 2019, which makes this less a career-long feud and more an intense stretch of competition. Gaudio took both of their 2017 finals, at the 2017 IBJJF San Diego Pro Championship and the 2017 Pan Jiu-Jitsu IBJJF Championship, both on points. Barbosa then won the next three, closing the series in his favor.

The two sit in different weight ranges, with Barbosa listed at Meio Pesado (88kg/194lbs) for Atos Northwest and Gaudio at Super Pesado (100,50 kg / 222.0 lbs) for GF Team, so most of these bouts were open-division or absolute meetings. Their broader records reflect a gap in finishing rate: Barbosa carries a 79% win rate across 214 recorded matches with 38% of his wins by submission, while Gaudio sits at 63% over 126 recorded matches with 24% of wins by submission.

Method tells the story of how these went. Four of the 5 meetings were decided by points or decision, so scoring and control mattered more than finishes. The lone stoppage was Barbosa's Choke in the semi-finals at the 2017 Abu Dhabi Grand Slam Los Angeles. Four of the 5 were in the gi, the exception being their 2019 ADCC quarter-final, which Barbosa won by decision in no-gi.