Group E whipping boys Pandurii Targu Jiu and Pacos Ferreira brought their dismal Europa League campaigns to a close with a goalless draw.
The pair completed their respective campaigns with just five points between them and having long since lost all hope of qualifying for the last 32.
Currently rock-bottom of the Portuguese Liga after suffering back-to-back defeats, Pacos at least avoided a similar fate in Europe with the draw enough to keep them one point clear of their rivals.
But their night still ended on a low note when Andre Leao was sent off for a second bookable offence in the 89th minute.
Paolo Hurtado and Jean Michael Seri both had early chances as the visitors started well, while Pandurii had to wait until the 16th minute for their first real chance when Erico brought a save out of Matias Degra.
His opposite number Razvan Stanca had to be alert to save from Carlao but it was the hosts who were pressing, Viorel Nicoara missing the target for the home side just before the half-hour and Nicandro Breeveld missing an even better chance moments later.
Alex Dos Santos and Nicoara both had chances towards the end of the half as the home side finished well on top.
A slower second half almost saw the visitors take the lead in the 62nd minute when Carlao drew a fine save from Stanca, then both Sergio Oliveira and Hurtado missed good chances.
Tiago Valente brought another save out of Stanca in the 82nd minute and Bebe also came close before the visitors' night was soured by Leao's dismissal.