Man of the match Nemanja Matić
Both of these sides would have hoped to have three points on the board by now but drew their opening matches in the group so will be more determined to get a result in this one.
Sporting came through a tough match at the weekend against Porto, while Chelsea were comfortable victors over Aston Villa, but the Portuguese have home advantage and will want to at least get a point on Tuesday.
That may have been a result that Mourinho would have settled for back in his homeland had Chelsea beaten Schalke a fortnight ago but the Blues should work hard for all three this time out.