Pascal Struijk, Diego Llorente and Luke Ayling all struggled in Leeds United's 4-2 defeat at home to Manchester United on Sunday.
The Whites hosted their bitter rivals at Elland Road on Sunday afternoon, desperately looking to pull away from the relegation scrap.
It proved to be another disappointing outing for Marcelo Bielsa's side, however, as they fell behind to first-half headers from Harry Maguire and Bruno Fernandes.
A quickfire fightback made it 2-2, as Rodrigo and Raphinha found the net, but the visitors pulled away again thanks to efforts from Fred and Anthony Elanga.
According to Sofascore, these were Leeds' three worst players against United, of those to have played at least 45 minutes of action.
Struijk - 5.7
Struijk started at the heart of the Whites' defence both suffered a poor day at the office, proving to be partly at fault for both Fred and Elanga's goals.
The 22-year-old failed to make a single tackle in the game, despite United often being in and around Leeds' area, and he was also dribbled past on one occasion.
Struijk failed to win his only aerial duel of the match, too, whilst failing to make a single key pass and giving away the ball on eight occasions.
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Ayling - 5.9
Ayling was also a long way from his best, as his season continues to be a struggle compared to last term, not helped by injury problems.
The 30-year-old lost possession a total of 12 times against United, not to mention playing no key passes, failing to affect the game in an attacking sense.
Ayling didn't manage a single cross either, further highlighting that point, and he completed the set when it came to no aerial duels won.
Llorente - 6.4
Llorente was another Whites defender who failed to cover himself in glory, as Bielsa's men made it 50 league goals conceded in 24 games this season. In fairness, Dan James and Jack Harrison also got the same score.
Like Stuijk, the Spaniard lost his one aerial duel on the day, as well as making no interceptions, no key passes and losing possession four times at Elland Road.
Llorente was replaced at half-time, which perhaps says a lot about his performance.
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In other news, a key update has emerged regarding Marcelo Bielsa's potential successor. Read more here.