A 1-5 thrashing at the hands of Liverpool is just the latest heavy home defeat suffered by Porto in the Champions League in recent years.
Porto will be hoping to cause an upset against Liverpool to boost their hopes of progressing to the next round of the Champions League.
Sporting made the most miserable of starts to their 2021-22 Champions League campaign.
Ronaldo broke the men’s international goalscoring record as he led Portugal to a last gasp victory.
With the second leg in London still to come, Spurs remain comfortable favourites to advance.