Just seconds after kick-off, the Belgium midfielder underlined his threat with a clever run and cut back on the right side of the penalty area that ended with Costa unable to prod past Saints goalkeeper Fraser Forster.
Pirmā puslaika izskaņā Mourinju šķita, ka soda laukumā noteikumi pārkāpti pret Mančestras futbolistu Mateo Darmjanu, tomēr tiesneši nolēma nepiešķirt 11 metru soda sitienu.