Eight teams remain on a mission to reach the UEFA Europa League final as the competition heads to the quarterfinal stage.
The English Premier League and La Liga have controlled the UEFA Europa League since 2012, and teams from those two leagues represent four of the eight quarterfinalists in Manchester United, Arsenal, Villarreal and Granada.
Only United have a Europa League title in the last nine years of the quartet.
Arsenal is two years removed from a Europa League final berth, and the manager who led the Gunners to that position (Unai Emery) is in charge of Villarreal and has previously won the tournament three times with Sevilla.