The goalkeeper made a superb one-handed stop to deny Rusescu early on and another low block from Tanase but could do nothing about Chiriches' follow-up for the equaliser.
The right-back took a heavy blow early on but wasn't unduly troubled down his flank, without providing anything spectacular going forward.
The Brazilian defender looked to initiate plays from the back with Cech and dominated in the air, and held his position well.
It was a little surprising to see the left-back holding back given Rapa's obvious inability to deal with Hazard on the wing but he improved in the second half.
The captain was guilty of stepping up and letting Rusescu in on goal early on, but competed well at corners as per usual. Scored a trademark header to make amends and set up a great comeback.
Constantly looked to cut in from the left and work a shooting opportunity on his right foot, he posed a real problem all night for Steaua. A cheeky dummy allowed Torres to find shooting space for the third and won a penalty on a great night.
Full of neat touches in the final third but lacked the killer pass too often in a quieter than usual European night for the Brazil starlet.
The Brazilian midfielder impressed at Old Trafford but gave away possession a little cheaply early on. Made a great run to set up Mata's opener however.
Was lively from the off and combined brilliantly with Ramires to score the opening goal. The Spaniard set up Terry, played a key part in Torres' and was at the heart of everything Chelsea did well.
J. Obi Mikel
Started brightly but almost cost his side a goal with careless possession letting Rusescu in, but forced a good stop from Tatarusanu in the first half.
Almost had an early chance but predictably slipped instead of shooting. The best thing he did in the first 45 minutes was move out of the way of Mata to let his compatriot score. He looked a man reborn in the second 45 and scored the all-important third, but also missed a late penalty.
Made a good stop from Mikel early on and was unfortunate to see his save from Mata deflect off the post and in for the opener. Saved well from a Hazard drive.
Scored with a fine close-range finish on the stroke of half-time with the hosts in the ascendency but couldn't stem the tide in the second half.
Was lucky not to give away a penalty against Torres, and failed to deal with the pace of Chelsea's attack.
The left-back held his ground well but went increasingly narrow as Chelsea looked to exploit the opposite flank, but struggled as the game wore on.
Dealt with the ball competently at the back but struggled with Hazard's pace down the flank. Rightfully substituted.
Struggled to get in to the game early on but his blocked injury-time effort led to Chiriches' equaliser. Replaced by Leandro.
The Steaua captain certainly wasn't afraid to drive forward and shoot at Cech's goal - he led by example in both defence and attack, but gave away a penalty by tripping Hazard.
Fed Rusescu cleverly for what should have been the opening goal and looked dangerous whenever he got on the ball.
Held the fort in midfield but became overwhelmed as the game progressed.
Adrian Popa I
Eager to chase down the ball on the right, which was a big task given the talent of Cole and Hazard on that flank.
Missed a gilt-edged opportunity to put the visitors ahead after 12 minutes which should have nestled in the net.