Chelsea v West Bromwich Albion player ratings: Thiago Silva 2, Marcos Alonso 4; Matheus Pereira a perfect 10

A 5-2 defeat at Stamford Bridge marks Thomas Tuchel's first loss as Chelsea manager

CHELSEA PLAYER RATINGS: Edouard Mendy – 5. Couldn’t do much about any of the goals and pulled off a couple of decent saves … but conceded five. Reuters

Thiago Silva – 2. What is it about Thiago Silva and West Brom? Since his calamitous mistake against the Baggies on debut, the Brazilian has been imperious for Chelsea. Returning after missing two months with injury, Silva looked rusty and was sent off for a second bookable offence inside the first half hour. AFP

Kurt Zouma – 5. Solid for most of the first half but misjudged the bounce on Johnstone’s long ball and his hesitation allowed Pereira to pounce. Had a decent effort from a corner but his volleyed shot went over, then missed a sitter from another corner. Far from composed. Getty Images

Cesar Azpilicueta – 5. In a match consumed by chaos, the Chelsea captain tried to keep his concentration and composure. That wasn’t enough, though as the Blues conceded five. AFP

Reece James – 6. Unable to dominate the right flank as he has done so often. Got forward when he could but was forced to defend more than usual. AFP

Marcos Alonso – 4. His defensive vulnerabilities were again brutally exposed after Chelsea went down to 10 men. Should have been stronger against Phillips for West Brom’s second and his lack of pace gave Furlong all the time in the world to cross for Robinson’s goal. Reuters

Jorginho – 5. In games when he is unable to help Chelsea dominate possession, the Italian can become anonymous. This was a case in point. AP

Mateo Kovacic – 8. Looked typically comfortable when Chelsea were cruising, but when the hosts started chasing the game, the Croatian went into overdrive. Kovacic was by far his team’s best player, full of running, incisive passing, and energy. Reuters

Hakim Ziyech – 5. Overplayed a pass to Pulisic but wasn’t afforded much more time to grow into the game, the Moroccan making way in a tactical switch following Silva’s dismissal. EPA

Christian Pulisic – 7. His sharp turn drew the foul for Alonso’s free-kick, which the American reacted fastest to for Chelsea’s opener. Replaced at half time for Mount. AFP

Timo Werner – 6. Quick feet to set up Mount for Chelsea’s second. Some might argue it showed a lack of confidence, but it was good quick thinking by the German. Looked dangerous on the few occasions he broke the West Brom line but overall, had a limited impact. Reuters

SUBS: Andreas Christensen (33’) – 4. Came on with the scores level but was pulled apart by a vibrant and pacey West Brom attack. AP

Mason Mount (45’) – 7. Had a decent chance to score Chelsea’s second but was soon on the scoresheet when he tapped home from Werner’s assist. Tried to force the issue in attack but couldn’t drag his team back into the match. AFP

Kai Havertz (72’) – N/A. Brought on to fight a losing battle. Getty Images

WEST BROM PLAYER RATINGS: Sam Johnstone – 7. Produced a fine fingertip save on Alonso’s free-kick but could do little about Pulisic’s follow up finish. Got himself an assist with his thumping up field pass for Pereira. Pulled off some good saves and was quick off his line, even if there were some nervy moments. PA

Darnell Furlong – 8. Defended brilliantly for the opening 20 or so minutes and as West Brom became more expansive, offered his team an outlet on the right. His fine performance was rewarded with an assist when his cross led to Robinson’s goal. PA

Dara O’Shea – 6. Played his part in a composed start by West Brom, only for an ankle injury to see him forced off in the 24th minute. AP

Kyle Bartley – 7. Kept the Chelsea attack quiet until the opening goal and for much of the rest of the game as West Brom took charge (no match photo available). Reuters

Semi Ajayi – 8. Sharp last-man defending to block an Alonso effort on to the post early in the second half. Good performance in a compact West Brom defence. AFP

Conor Townsend – 7. Got caught out in defence on a few occasions but provided an option on the left wing and helped West Brom push Chelsea back. AFP

Matt Phillips – 7. Inches away from a goal of the season contender when his curling effort smacked the crossbar just before halftime. Contributed to giving Alonso a horrid afternoon. EPA

Okay Yokuslu – 7. A solid display in midfield and it was Silva’s challenge on the Turk that reduced Chelsea to 10 men and helped turn the tide. AFP

Ainsley Maitland-Niles – 7. No match for Kovacic in central midfield but the on-loan Arsenal player was good in possession and played his part in this sensational victory. Reuters

Matheus Pereira – 10. Superb run and lofted finish for the equaliser after latching on to Johnstone’s route one ball and then showed excellent calmness and speed of thought to score West Brom’s second goal. Man of the match. EPA

Mbaye Diagne – 8. Grabbed West Brom’s fourth with a good side-footed finish and led the line well. EPA

SUBS: Branislav Ivanovic (24’) – N/A. Back at the club where he earned hero status, the Serbian’s appearance lasted just 13 minutes after he pulled up with a hamstring injury. Reuters

Callum Robinson (37’) – 9. As much as Silva must hate this fixture, Robinson must wish he could play Chelsea every week. The striker scored West Brom’s third with a thunderous volley and then scored the fifth. His only other Premier League goals this season have also come against the Blues. AFP

Jake Livermore (89’) – N/A. Sent on to help kill the game (no match photo available). AFP

Relegation-threatened West Bromwich Albion gave their Premier League survival hopes a huge boost with a stunning 5-2 victory over 10-man Chelsea at Stamford Bridge on Saturday.

Chelsea, fourth in the table, took the lead just before the half-hour mark when Marcos Alonso's free kick came off the post and Christian Pulisic scored from the rebound, the American winger's first goal under manager Thomas Tuchel.

Two minutes later Chelsea defender Thiago Silva was sent off after receiving a second yellow card for a reckless challenge.

West Brom used their numerical advantage to good effect as Matheus Pereira scored two goals in quick succession in first-half stoppage time to put the visitors ahead at the interval.

They added two goals on the counter-attack five minutes apart in the second half, with Callum Robinson volleying home a Darnell Furlong cross before Pereira turned provider for Mbaye Diagne.

Chelsea pulled one back to make it 4-2 when Timo Werner set up substitute Mason Mount for a simple tap-in but West Brom scored their fifth in stoppage time when Robinson found space and chipped onrushing keeper Edouard Mendy.

West Brom remained second-bottom of the table, seven points from the safety zone.

Reflecting on the performances at Stamford Bridge, Jon Turner has provided his player ratings in the photo gallery above. To move on to the next photo, click on the arrows, or if using a mobile device simply swipe.