Zürich beat Villarreal the last time these sides met in Switzerland, and a repeat of that outcome could spell an early UEFA Europa League exit for the Yellow Submarine.
Article top media content
It could be winner takes all on matchday five as Zürich and Villarreal meet in Group L, with the result potentially deciding both sides' UEFA Europa League destiny.
• Villarreal go through with a victory provided Steaua do not win against Osmanlıspor; Zurich qualify if they win by a two-goal margin or 1-0 and Steaua do not prevail.
• Zürich led within two minutes of kick-off when these teams met for the third time on matchday one, but the Yellow Submarine rallied to win 2-1.
• The clubs previously met in two high-scoring games in the UEFA Europa League group stage in 2014/15; Marcelino's Villarreal triumphed 4-1 at home but went down 3-2 to Urs Meier's side back in Switzerland.
• Current Zürich players Oliver Buff and Marco Schönbachler (with his only UEFA club competition goal to date) were on target in those matches, along with Villarreal's Bruno Soriano.
• Zürich are unbeaten in three games since that matchday one loss at Villarreal (W1 D2) and have not lost in their last seven group stage home games (W4 D3).
• Villarreal have drawn both of their Group L away fixtures, and are without a win in four European matches on the road (D2 L2).
• Zürich have failed to make it through the UEFA Cup/UEFA Europa League group stage in two attempts since making the cut in their first appearance in 2007/08.
• The Yellow Submarine have qualified for the round of 32 in all six of their previous UEFA Cup and UEFA Europa League group stage ventures.
Links and trivia
• The journey from Villarreal to Zurich is just shy of 1,100km.
• Villarreal's Pato, Braga's Pedro Santos and Austria Wien's Felipe Pires were the most fouled players in the first four matchdays, with 14 infringements each against them.
• Villarreal have become only the second side after PSV Eindhoven to play 50 UEFA Europa League games, group stage to final.
• Hired as Zürich coach in May following their relegation from the Swiss top flight, Uli Forte was a defender in Switzerland's lower leagues, climbing the ladder as a coach with spells managing St Gallen, Grasshoppers and Young Boys.
• Fran Escribá took charge of Villarreal in August. A trainee at Valencia, he coached with the club's youth teams, and was Quique Sánchez Flores's assistant at Valencia, Getafe, Benfica and Atlético Madrid before going it alone with Elche and – last season – Getafe.