Lewis O’Brien 5/10
(On for Howson 70’) Tough time to come on with game already long since lost. Getty Images Alex Gilbert : N/A (On for Crooks 89’)
Djordje Petrovic 6/10
CHELSEA RATINGS: One easy save was extent of exertions in opening 45 minutes, only shot on target in second was fine Rogers finish that earned visitors consolation goal. Reuters
Axel Disasi 8/10
Low cross helped set-up Enzo’s goal. Won ball back before exchanging passes with Sterling and finishing well to make it 3-0 in first-half demolition job by Blues. Should have scored another but failedShow more
Thiago Silva 7/10
Little stress against powder-puff Boro attack, but anything thrown at him, the Brazilian dealt with. Played the ball out in style throughout. Booked for foul on Rodgers. AFP
Levi Colwill 7/10
After disastrous first leg at left-back, was back in preferred central role and clearly more comfortable, although Boro’s attacking threat wasn’t exactly huge. Whipped strike wide of target just afterShow more
Ben Chilwell 8/10
Welcome return to team as captain and looped early header wide but felt he should have won penalty after being clattered by keeper Glover, picking up booking for complaining. Superb ball through to StShow more
Moises Caicedo 7/10
Big-money summer signing from Brighton did the dirty work in front of the back four, strong in the tackle and kept it simple with his distribution. AP
Enzo Fernandez 7/10
Argentine swept home Chelsea’s second for fifth Chelsea goal and nearly made it a quickfire double but got no power behind strike minutes later. Getty Images
Cole Palmer 8/10
Missed a hatful of chances in opening leg but took his first chance in style here with calm finish to make it 4-0 before the break. Side-footed home Chelsea's fifth 13 minutes from time. Former Man CiShow more
Raheem Sterling 8/10
Was his pass that Howson turned into his own net in 15th minute, played key role in second goal with lovely backheel and provided assist to Disasi for third. Getty Images
Mykhailo Mudryk 5/10
Chelsea fans want him in the starting 11 but Ukrainian was anonymous in opening half despite team running rampant. Booked for dissent and hooked at break. PA
Armando Broja 6/10
Striker was denied opening goal when Howson beat him to final touch and scored own goal. Can claim assist for scuffed pass to set up Enzo for second. Getty Images
Noni Madueke 7/10
SUBS: (On for Mudryk 46’) Lovely ball through to fellow substitute Gallagher who should have done better with chance. Curled home Chelsea’s sixth goal. AP
Conor Gallagher 7/10
(On for Broja 64’) Caught in two minds when put through on goal and tackled before getting shot away. Provided nice assist for Palmer’s second and Chelsea’s fifth. AP
Alfie Gilchrist 6/10
(On for Chilwell 64’) Young defender given decent run out with tie safely in the bag. Reuters
Carney Chukwuemeka 6/10
(On for Caicedo 72’) Good opportunity for 20-year-old midfielder to ease himself back into the action after injury-hit season. AP
Leo Castledine N/A
(On for Sterling 85’) Teenager made his Chelsea debut.
Tom Glover 5/10
MIDDLESBROUGH RATINGS: Pretty helpless in face of steady stream of defensive blunders leading to goals although some of his passes out from back only added to team’s problems. PA
Rav van den Berg 6/10
In what was miserable first half for visitors, Dutch centre-half playing at right-back due to injuries actually kept Mudryk very quiet – so much so Ukrainian didn’t appear for second half. Booked for Show more
Dael Fry 5/10
Boro academy player helped team keep impressive clean sheet on Teeside but team were four down before half-time here. Good saving tackle on Gallagher to deny Blues substitute second-half goal. Reuters
Matt Clarke 5/10
Former Brighton defender - although never played game for Seagulls before joining Boro - was guilty of poor pass out from back that was intercepted and led to Chelsea’s third goal. Reuters
Lukas Engel 4/10
Dane struggled to deal with Sterling down left flank with the Blues attacker heavily involved in the opening three goals. Slack pass led to sixth Chelsea goal. Getty Images
Jonathan Howson 5/10
Veteran midfielder, who regularly dropped back to become part of back five, opened scoring with unfortunate own-goal and couldn’t help stop Chelsea’s first-half onslaught. Reuters
Daniel Barlaser 4/10
Stumbled and then caught in possession on edge of area that allowed Palmer to make it 4-0 as Boro crumbled. Beaten by Gallagher ahead of Chelsea’s fifth goal. Reuters
Matt Crooks 5/10
Poor late tackle crunching Enzo’s ankle earned him booking five minutes before half-time. Thought he’d headed home a consolation at six down only for offside flag to go up. AFP
Hayden Hackney 4/10
Scored only goal of first leg but there was absolutely no threat of that happening at Stamford Bridge on miserable night for Teesiders. Nutmegged and skinned by some lovely Palmer skill just after breShow more
Morgan Rogers 6/10
Became top scorer in League Cup this season with fifth goal of tournament, a lovely curling strike to make it 6-1 - the best finish of the game - in what could be his last game before joining Aston ViShow more
Marcus Forss 5/10
Finnish attacker tried to make things happen on rare Boro counters but ran into a brickwall Chelsea backline. Taken off at break with tie over. AFP
Anfernee Dijksteel 5/10
SUBS: (On for Forss 46’) Tried to offer some physical presence. Getty ImagesLewis O’Brien 5/10
(On for Howson 70’) Tough time to come on with game already long since lost. Getty Images Alex Gilbert : N/A (On for Crooks 89’)Djordje Petrovic 6/10
CHELSEA RATINGS: One easy save was extent of exertions in opening 45 minutes, only shot on target in second was fine Rogers finish that earned visitors consolation goal. ReutersAxel Disasi 8/10
Low cross helped set-up Enzo’s goal. Won ball back before exchanging passes with Sterling and finishing well to make it 3-0 in first-half demolition job by Blues. Should have scored another but failedShow moreThiago Silva 7/10
Little stress against powder-puff Boro attack, but anything thrown at him, the Brazilian dealt with. Played the ball out in style throughout. Booked for foul on Rodgers. AFPLevi Colwill 7/10
After disastrous first leg at left-back, was back in preferred central role and clearly more comfortable, although Boro’s attacking threat wasn’t exactly huge. Whipped strike wide of target just afterShow moreBen Chilwell 8/10
Welcome return to team as captain and looped early header wide but felt he should have won penalty after being clattered by keeper Glover, picking up booking for complaining. Superb ball through to StShow moreMoises Caicedo 7/10
Big-money summer signing from Brighton did the dirty work in front of the back four, strong in the tackle and kept it simple with his distribution. APEnzo Fernandez 7/10
Argentine swept home Chelsea’s second for fifth Chelsea goal and nearly made it a quickfire double but got no power behind strike minutes later. Getty ImagesCole Palmer 8/10
Missed a hatful of chances in opening leg but took his first chance in style here with calm finish to make it 4-0 before the break. Side-footed home Chelsea's fifth 13 minutes from time. Former Man CiShow moreRaheem Sterling 8/10
Was his pass that Howson turned into his own net in 15th minute, played key role in second goal with lovely backheel and provided assist to Disasi for third. Getty ImagesMykhailo Mudryk 5/10
Chelsea fans want him in the starting 11 but Ukrainian was anonymous in opening half despite team running rampant. Booked for dissent and hooked at break. PAArmando Broja 6/10
Striker was denied opening goal when Howson beat him to final touch and scored own goal. Can claim assist for scuffed pass to set up Enzo for second. Getty ImagesNoni Madueke 7/10
SUBS: (On for Mudryk 46’) Lovely ball through to fellow substitute Gallagher who should have done better with chance. Curled home Chelsea’s sixth goal. APConor Gallagher 7/10
(On for Broja 64’) Caught in two minds when put through on goal and tackled before getting shot away. Provided nice assist for Palmer’s second and Chelsea’s fifth. APAlfie Gilchrist 6/10
(On for Chilwell 64’) Young defender given decent run out with tie safely in the bag. ReutersCarney Chukwuemeka 6/10
(On for Caicedo 72’) Good opportunity for 20-year-old midfielder to ease himself back into the action after injury-hit season. APLeo Castledine N/A
(On for Sterling 85’) Teenager made his Chelsea debut.Tom Glover 5/10
MIDDLESBROUGH RATINGS: Pretty helpless in face of steady stream of defensive blunders leading to goals although some of his passes out from back only added to team’s problems. PARav van den Berg 6/10
In what was miserable first half for visitors, Dutch centre-half playing at right-back due to injuries actually kept Mudryk very quiet – so much so Ukrainian didn’t appear for second half. Booked for Show moreDael Fry 5/10
Boro academy player helped team keep impressive clean sheet on Teeside but team were four down before half-time here. Good saving tackle on Gallagher to deny Blues substitute second-half goal. ReutersMatt Clarke 5/10
Former Brighton defender - although never played game for Seagulls before joining Boro - was guilty of poor pass out from back that was intercepted and led to Chelsea’s third goal. ReutersLukas Engel 4/10
Dane struggled to deal with Sterling down left flank with the Blues attacker heavily involved in the opening three goals. Slack pass led to sixth Chelsea goal. Getty ImagesJonathan Howson 5/10
Veteran midfielder, who regularly dropped back to become part of back five, opened scoring with unfortunate own-goal and couldn’t help stop Chelsea’s first-half onslaught. ReutersDaniel Barlaser 4/10
Stumbled and then caught in possession on edge of area that allowed Palmer to make it 4-0 as Boro crumbled. Beaten by Gallagher ahead of Chelsea’s fifth goal. ReutersMatt Crooks 5/10
Poor late tackle crunching Enzo’s ankle earned him booking five minutes before half-time. Thought he’d headed home a consolation at six down only for offside flag to go up. AFPHayden Hackney 4/10
Scored only goal of first leg but there was absolutely no threat of that happening at Stamford Bridge on miserable night for Teesiders. Nutmegged and skinned by some lovely Palmer skill just after breShow moreMorgan Rogers 6/10
Became top scorer in League Cup this season with fifth goal of tournament, a lovely curling strike to make it 6-1 - the best finish of the game - in what could be his last game before joining Aston ViShow moreMarcus Forss 5/10
Finnish attacker tried to make things happen on rare Boro counters but ran into a brickwall Chelsea backline. Taken off at break with tie over. AFPAnfernee Dijksteel 5/10
SUBS: (On for Forss 46’) Tried to offer some physical presence. Getty Images