This is a one-sided rivalry on paper. Across 6 recorded meetings, Leandro Lo holds 5 wins over Otavio Sousa with 1 draw, and Sousa never got his hand raised against him. Three of those meetings came in 2014 alone, spread across the 2014 IBJJF World Championship, the 2014 IBJJF Pan Championship, and the 2014 Abu Dhabi World Professional Jiu-Jitsu Championship. The pair also met at the 2015 IBJJF Pan American Jiu Jitsu Championship and as late as the 2021 IBJJF World Championship, so this stretched across the better part of a decade.

The decisive theme is that Lo won these on the scoreboard, not by finishing. Of his 5 wins, 4 came on points and 1 came on advantage, including finals at the World and Pan level. Neither man submitted the other in any recorded meeting. Their earliest bout, at the 2012 Copa Podio Middleweight GP round robin, is logged with no recorded winner.

The styles read differently once you look past the head to head. Lo carries an 83% win rate over 342 recorded matches with a submission rate of 21% of his wins, and his most frequent finish is the Cross Collar Choke. Sousa sits at a 69% win rate over 173 recorded matches but finishes far more often, with 45% of his wins by submission and the Gi Choke From Back as his signature. Against Lo, though, that finishing edge never showed up on the record.