Liverpool keeper Loris Karius, on loan at Beiktas, was beaten by a deflected cross against Malmo and faced heavy criticism on social media.
Asked about Morata's apparent tears, Sarri replied: "I don't know, but if after a goal he wants to cry, I hope to see him cry very often."
Chelsea were dominant in their Europa League win over Vidi, but after wasting chance after chance, they relied on Kepa's saves to bail them out.
In case you missed any of the games, here's a quick rundown on how each of the players from Mexico fared in the European competitions.
Alvaro Morata provided the lone goal in Chelsea's 1-0 win over Vidi in Europa League group-stage action on Thursday.
Patrick Cutrone made a case for greater involvement, coming off the bench to score twice in AC Milan's 3-1 comeback win over Olympiakos.
Emery wants to make sure he doesn't get carried away after Thursday's success.
Arsenal brought a fairly senior lineup to Baku, but youngsters like Emile Smith Rowe stole the show in a 3-0 Europa League win over Qarabag.
Emile Smith Rowe scored his first career goal in Arsenal's 3-0 win over FK Qarabag in Europa League group-stage action on Thursday.
Substitute Patrick Cutrone netted twice in nine minutes to lift seven-time European champion AC Milan to a 3-1 comeback win at home to Olympiakos.
Ahead of their Europa League clash with Qarabag, the Arsenal squad had their pregame training session interrupted by a very special visit.
Arsenal duo Aaron Ramsey and Pierre-Emerick Aubameyang will miss Thursday's Europa League against Qarabag.
Arsenal face Qarabag in Baku on Thursday evening and then face a six-hour flight back to London ahead of their trip to Fulham on Sunday.
Henrikh Mkhitaryan would have needed special permit to enter Azerbaijan because of its ban on Armenians.
UEFA has confirmed that video assistant referees (VAR) will be used in the Champions League from next season.
A third European club competition will have little commercial value but will be important for clubs seeking exposure, Juventus' Andrea Agnelli said.
Unai Emery inherited a fragile defence from Arsene Wenger and has been unable to sort that issue out so far.
Bernd Leno made his debut in Arsenal's 4-2 win over FC Vorskla in the Europa League on Thursday, and was beaten by two late strikes.
Chelsea have been delayed on their return from Greece following the 1-0 win over PAOK Salonika in the Europa League on Thursday.
The Europa League usually delivers more than its fair share of bloopers. FC Zurich's Benjamin Kololli joined the ranks with a painful celebration.
Chelsea maintained its perfect start to the campaign when Brazil forward Willian scored in a 1-0 Europa League victory at PAOK Thessaloniki.
Unai Emery called on his Arsenal players to improve their defensive mentality after conceding two late goals in a 4-2 win over FC Vorskla.
Lucas Torreira and Bernd Leno made their first Arsenal starts while Pierre-Emerick Aubameyang re-found his scoring touch in a 4-2 win vs. Vorskla.
A double from Pierre-Emerick Aubamyeng and goals from Danny Welbeck and Mesut Ozil eased them to victory at the Emirates Stadium.