An investigation has been launched by the Football Association (FA) after Manchester United prospect Anthony Elanga was struck by an object thrown from the Elland Road stands.
Backing up their midweek victory over Brighton, the Old Trafford giants earned cross-county bragging rights from their Premier League showdown with Leeds United on Sunday afternoon.
Goals from Harry Maguire, Bruno Fernandes, Fred and Elanga settled the scores in a 4-2 verdict.