This was a match that will be remembered for the wrong reasons. Pedro Neto scored twice — the first a controlled finish after Jorrel Hato's byline cross, the second a cool stroke into the bottom corner during 11 minutes of added time — and Chelsea recorded their first away win and first clean sheet in 23 Premier League games. By every competitive metric, it was the professional away performance Xabi Alonso had been waiting for. But the image that lingers is Emi Martinez prone on the turf after a sickening head clash with Everton's Jarrad Branthwaite, conscious but hospital-bound. The first half was a fractious, card-heavy stalemate. Harrison Armstrong's crunching tackle on Josh Acheampong set the tone — five yellow cards before the break, Everton's crowd finally animated, Thierno Barry heading a Jack Grealish cross too close to Martinez. Chelsea's best first-half moment was Moises Caicedo's strike off the crossbar from a worked corner. The controversy belonged to Morgan Rogers escaping a second booking after a collision with James Garner, a decision David Moyes and Everton will replay bitterly. Chelsea emerged from the tunnel a different side. Hato got free down the left, his low cross found Neto, and the Portuguese forward took a touch before firing past Jordan Pickford inside the opening minute of the half. That's the Alonso template — fast starts, front-foot pressing — and it worked here with surgical efficiency. Then the match stopped. Martinez and Branthwaite contested an aerial ball and the goalkeeper came off worst. The treatment was lengthy. Alonso confirmed Martinez left the stadium conscious and went to hospital for precautionary tests. Belgian keeper Mike Penders came on for his Premier League debut and had almost nothing to do — a few desperate Everton crosses, nothing more. Neto's second was the punctuation mark. Jordan Henderson's free-kick was blocked by the Everton wall, the ball fell kindly, and Neto finished with the composure of a player in form. "We are really pleased. Shame for Emi but we wish you all the best. This win is for him," Neto told TNT Sports. For Everton, this was a first defeat of the season, and Moyes was honest about the gap: "Chelsea had that little bit more flair and ability which we didn't possess at the right moments today." Barry's wastefulness in front of goal — a recurring theme — and a shortage of forward options left the Toffees toothless once behind. Chelsea move above Everton into the top four. The clean sheet, 23 games in the making, matters almost as much as the points. The football, though, is secondary tonight. The Premier League's concussion protocols will face scrutiny again, and the wait for Martinez's test results will dominate the next news cycle. Head injuries in football remain under-addressed relative to the sport's physical reality, and every incident like this sharpens the question of whether the protocols go far enough.