Swansea upset Chelsea 2-0 in the first leg, as Michu and Danny Graham each netted goals. Swansea was also able to keep Chelsea scoreless, which was a remarkable feat considering the Blues had scored 16 goals in their three League Cup matches leading up to the contest.
It should be an exciting game, as Chelsea will have to be very aggressive in order to win the aggregate. Many players will impact the outcome of the match, but be sure to keep your eye on the following three.
Juan Mata—Forward, Chelsea
Chelsea's supremely creative forward, Mata, had been shredding opponents in the League Cup prior to facing Swansea. Mata has two goals and four assists in the tournament thus far, and Chelsea will hope he can add to those totals on Wednesday.
They should be encouraged, as Mata scored against Arsenal on Sunday. With his vision and incredible technical skills, Mata could cause serious problems for Swansea.
Michu—Midfielder, Swansea City
Michu provided the opening goal against Chelsea earlier this month, and he will be a threat to score yet again.
The midfielder has burst onto the scene in the Premier League this season, scoring 13 goals in 22 appearances. He hasn't scored since Swansea's last meeting with Chelsea, but as he proved with consecutive doubles against Arsenal and Norwich, Michu is capable of exploding at any time.
If Chelsea aren't careful, Michu could widen Swansea's advantage.
Demba Ba—Forward, Chelsea
Chelsea will be in full-on attack mode, which means they will need their new striker to deliver.
Ba has performed well since joining the club, scoring three goals in five appearances with the Blues. His speed and power are elite, and if he finds some space in front of goal, he will punish defenses.
Ba will have the green light to attack, attack, attack on Wednesday, so expect him to be very active. If Chelsea are going to have a chance of advancing, they will need Ba on the scoresheet.