Huesca did tremendously well under coach Michel to bounce back to the top-flight at the first attempt last season and newly promoted sides often start with a surprise, but on paper Villarreal should be much too strong for them.
Last season ended with failure to qualify for Europe and that saw the club begin a major clear out. Central defender Ezequiel Garay became a free agent, while Dani Parejo and Francis Coquelin were sold at a bargain price to nearby Villarreal and Spain internationals Ferran Torres and Rodrigo Moreno joined Manchester City and Leeds United, with Torres going for much less than most believe he is worth.
Duisburg tried to keep pace but the "BVB" continued their relentless march, as Giovanni Reyna's deflected free-kick left goalkeeper Leo Weinkauf helpless five minutes into the second half.
Tello's late effort did justice to the score as Betis had twice hit the woodwork earlier in the game through Guido Rodriguez and Sergio Canales.
AFC said in a separate statement that it had received notification from Al Wahda of United Arab Emirates that the club is unable to travel to Qatar to compete in the AFC Champions League West Zone matches where they currently occupy second place in Group A after several members of the club tested positive for COVID-19.
In the constructors' standings, Mercedes remain well out in front on 325 point, with Red Bull second on 173 and McLaren third on 106.
The Rubro-Negro won their opening two matches of South America's premier club competition before it was halted in March because of the coronavirus pandemic.
Seven-time green jersey winner Sagan thus is left 68 points behind Bennett in the best sprinter's battle as the latter collected 47 from the 167.5km ride from Chatelaillon-Plage to Poitiers to extend his lead.
Nuremberg responded well but Eintracht's defence neutralized all attacks within the midfield. However, the visitors should have tripled the lead but Daichi Kamada wasted a golden chance in the 71st minute.
Things went from bad to worse for the capital club, as Suleiman Abdullahi shrugged off Berlin defender Niklas Stark to put the result beyond doubt after nutmegging Schwolow from a tight angle for the 5-3 lead in the 75th minute.
International runners came from Britain, Germany, Argentina, Latvia, Finland, the Netherlands as well as other countries and regions.