With Demba Ba cup-tied, the Spaniard gets a chance to atone for his poor performance in the first leg, among five changes made by Rafa Benitez to protect their 1-0 lead
The Spaniard is one of five changes to the Blues side that started their 4-0 FA Cup drubbing of Brentford, with Cesar Azpilicueta, Ryan Bertrand, Ramires and John Obi Mikel all returning for the home leg.
With Demba Ba cup-tied due to his earlier exploits with Newcastle, Torres gets another chance to prove his worth after a disappointing outing in the Czech Republic one week previously.
John Terry did not start the first leg but was back in the side against Brentford and retains his place for the European clash, as usual with his captain's armband.
Sparta make one change from the first leg with the injured Josef Husbauer replaced by a more attacking option in youngster Tomas Prikryl.
Chelsea starting XI: Cech; Azpilicueta, Terry, Cahill, Bertrand; Ramires, Mikel; Oscar, Mata, Moses; Torres
Subs: Turnbull, Cole, Luiz, Hazard, Ferreira, Marin, Benayoun
Sparta Prague starting XI: Vaclik; Zapotocny, Svejdik, Holek, Hybs; Vacha; Prikryl, Matejovsky, Kadlec, Krejci; Lafata
Subs: Cech, Pamic, Vidlicka, Polom, Janos, Kweuke, Bednar