With Bielsa in charge, Uruguay are transformed, with the legendary manager instilling an aggression and tenacity to complement a talented new generation.
Nunez is central to this, with the 24-year-old taking the mantle from Luis Suarez and Edinson Cavani as his countrys lead attacking threat.
Having worked one-to-one with Bielsa as well as, of course, Jurgen Klopp Nunez has been in emphatic form this season.
In five games under his new manager, he has scored three and assisted three, with his latest goal a stunning strike on the counter as Uruguay beat Argentina 2-0.
Argentina went into Thursdays World Cup qualifier unbeaten since lifting the World Cup in Qatar, with eight consecutive wins in 2023.
Uruguay showed their intent early on, with Nunez racing off the shoulder of Nicolas Otamendi and onto a lofted ball from Ronald Araujo, only to fire just wide of the far post.
Araujo made it 1-0 before the break with a well-taken finish, with Alexis Mac Allister substituted at half-time for Argentina having been booked Ole describing the midfielder as overwhelmed.
And though Argentina dominated possession (63 percent) and fired twice as many shots on goal (12 to six), Uruguay made it count late on.
With Lionel Messi dispossessed on the edge of the box, Jose Gimenez laid it off to Nicolas de la Cruz, who threaded a ball through for the onrushing Nunez.
Darwin Nunez for club ? and country ?? this season.
? 22 games?? 10 goals?? 9 assists? 66.3 mins per G/A
Incredible form. #LFC pic.twitter.com/fjugktkL1Z
Jack Lusby (@LusbyJack) November 17, 2023