The Whites looked to be heading out in normal time following Mallik Wilks' fifth-minute strike only for Gjanni Alioski to equalise in the 92nd minute to take the game to spot kicks.
Yet United's joy and relief was shortlived and Graham Smyth, the YEP's chief football writer, hands out the scores.
1. Kiko Casilla
6 - Poor pass for the first goal wasn't his only bad one of the night but he made a couple of really big stops. Picture by Phil Noble/PA Wire.
2. Jamie Shackleton
6 - Tried his best to give Leeds an outlet on the right but struggled to impact the game. Photo by Phil Noble - Pool/Getty Images.
3. Charlie Cresswell
5 - A difficult debut. Showed some nice passing ability but defensively struggled to cope with the direct play and Wilks. Picture by Oli Scarff/PA Wire
4. Leif Davis
5 - Came up against a big, strong and clever striker and was drawn into a battle he couldn't win. Photo by George Wood/Getty Images.
5. Barry Douglas
5 - A couple of lovely set-piece deliveries aside, struggled to impose himself on the play going either way. Picture by Phil Noble/PA Wire.
6. Oliver Casey
5 - Struggled with the position, got dragged into the Wilks scrap that he couldn't get on top of. Picture by Oli Scarff/PA Wire.