Demba Ba got life at Chelsea off to a fine start, netting a brace on his debut as the FA Cup holders secured safe passage to the fourth round with a 5-1 win at the expense of Southampton.
The 27-year-old completed his move from Newcastle to west London on Friday and took just 35 minutes to open his account for the Blues. Rafael Benitez's side had fallen behind to a fine Jay Rodriguez goal but Ba quickly drew his new side level, getting the final touch on a goalbound Juan Mata effort.
Victor Moses' strike in first-half stoppage time gave Chelsea the lead, with Branislav Ivanovic heading the visitors further ahead seven minutes after the restart. Ba put the tie out of any doubt in the 61st minute, linking up impressively with his new team-mates to slot home past Artur Boruc before Frank Lampard struck a late penalty.