Former Tottenham and Watford left-back Danny Rose played a key role in proceedings in the first-half at the Emirates but for all the wrong reasons for the Hornets.
The former England international gave away a stonewall penalty in an opening half that frustrated Arsenal, who somehow couldn’t find a breakthrough.
Bukayo Saka saw his goal ruled off for offside as he was behind goalkeeper Ben Foster when he was played in for his finish.
Striker Alexandre Lacazette was then clattered into by an oncoming Rose in the box. Referee Kevin Friend took his time in making a decision but eventually gave a penalty but there was no booking for the left-back.
Pierre-Emerick Aubameyang stood up to take his penalty, putting it to the left of the goal but it was equalled by the hand of Foster, who kept his side in it once again.
Rose spent 14- years at Tottenham, joining them from the Leeds academy in 2007. He was a regular feature of many north London clashes between Spurs and Arsenal in the past, but switched to Watford on a free transfer in the summer.
Fans were quick to take to social media to discuss the former Spurs man giving away a penalty in the first half.
@KG_FFB: “Rose should’ve got sent off for that foul on Lacazette & to make it worse Aubameyang had to miss didn’t he. Think it’s safe to say, Lacazette or Pépé need to take our next penalty!”
@xDaveAFC: “Danny Rose didn’t get a card for his foul on Lacazette for the penalty btw.Not even a yellow. For a WWE-inspired clothesline…”
@BrandonHem92: “How is Rose still on the pitch, but more importantly, that was a shocking penalty from Auba!”
@elspanishgooner: “We are not talking enough that Danny Rose should be on a red already. Yellow card for the tackle on Saka, a second yellow for the penalty on Lacazette. But this is Arsenal, it is what it is.”
@swalespeanut: “No yellow or red for rose and we miss a penalty. We’re losing this 1-0.”