Manchester City beat Arsenal 2-1 on Sunday, with Leroy Sane and Raheem Sterling scoring to engineer a comeback victory for manager Pep Guardiola.
Theo Walcott scored early on to put the Gunners ahead, but they ended up losing to the Citizens – much as they were defeated after going ahead against Everton in mid-week.
This has put question marks over several of the north Londoners’ players, with Premier League leaders Chelsea now nine points ahead of them.
The young winger hasn’t exactly set the world alight since arriving in Manchester last summer, but he was in top form against Arsenal.
A constant danger on in the final third, the 20-year-old and Raheem Sterling both fed off Kevin De Bruyne’s passes to cause trouble for the Gunners’ back line.
The Germany international’s goal was just reward for his performance, coolly finishing after David Silva had put him through on goal in the first few minutes of the first half.
Brought off after 76 minutes when showing signs of tiring, the forward has definitely shown that he has what it takes to become a Premier League star.
Both attacks were able to cut through the defences throughout the clash, and Sanchez once again showed his ability to set up Walcott’s early goal.
With the Chilean still yet to sign a new contract with the north Londoners, this was another sign that the Gunners need to keep their top player at the Emirates.
Although he was quieter in the second half, the forward was able to effect the game when given the chance – with only poor performances from Francis Coquelin, Mesut Ozil, and Granit Xhaka leaving him too isolated.
Ozil has drawn criticism for not making his mark in the big games, and this showing won’t change many minds on that front.
The Germany international had little impact on the encounter, and found himself too deep on several occasions when the Gunners were going forward.
If the 28-year-old wants to earn the massive new contract that is on the cards, he may need to impress more when the going is tough for Arsenal.
Many have pointed to Pep Guardiola’s tactics causing problems for City’s defence, but it is hard for the manager when his centre-backs aren’t performing.
Otamendi was facing the wrong way when Sanchez played Walcott in for the north Londoners’ goal, and his positioning wasn’t much better for the rest of the 90 minutes.
John Stones has already been relegated to the substitutes’ bench after a string of mistakes, and the Argentine would be in serious danger of following him if Guardiola had any other options at the back.