Do not have to be sponsor,but I mean (bet365 as the largest bet company) bet companies they are going to make this games in their favor.Take example: Basel X,Lazio X ....ect let`s see other 4.
Here is one example(simple logic):Lazio - Chievo 1:1 ...lazio had 1.4 odd,this is the odd which players are looking for(bookies are making very favorite Lazio with 1.4odd).Lazio is on top 4 no matter what,so no needed to win for 3points.Also BAsel and Fiorentina had the same situation.