Arsene Wenger may blame the penalty for his side's defeat to Watford on Saturday, but the simple fact of the matter is Arsenal's players weren't good enough.
Defensively the Gunners were woeful, especially in the second half, and they were duly punished by two late goals.
Troy Deeney converted said penalty with aplomb before Tom Cleverly fired past Petr Cech from a rebound in the 92nd minute.
A number of players were to blame for the defeat. Hector Bellerin was unfortunate to give the penalty away but gave Richarlison too much space in the first place.
Granit Xhaka, on the other hand, was caught napping and failed to track Cleverly's run for his last-minute winner.
Arsenal have now lost three of their opening eight Premier League games, suggesting they will not be challenging for the title this season - again.
Whereas Manchester City and Manchester United are going strong at the top of the table, Arsenal have shown inconsistency and deserve to be nine points behind.
Change is most certainly needed and it's now up to Arsene Wenger to identify the problems in his team.
Squad selection could be one of them. Danny Welbeck only recently returned from injury and started against Watford, yet Mesut Ozil was on the bench.
Jack Wilshere has also shown he's somewhere back to his best and is long overdue a start in the Premier League. Arsenal lacked his drive in midfield.
Well, according to football.london, the Gunners have taken steps to improve player performance - by installing a £100,000 Virtual Reality system at their training ground in London Colney.
Arsenal hired tech company Beyond Sports to build them a state-of-the-art analysis suite that allows the players to relive moments from any given game through VR.
However, there is a problem. Arsenal's players have reportedly complained about suffering motion sickness from the system, so it's not exactly having the desired effect.
A spokesman from Beyond Sports said: "What we do can help professional football clubs to take either their match analysis or training programme to the next level.
"Virtual Reality can offer a special perspective that a normal camera perspective cannot offer, giving the players or coaches the opportunity to relive or train situations through the eyes of a player.
"VR training will actually decrease the reaction speed and will increase the amount of correct decisions made.
"Youth Academy players will also be able to train at the speed of the first team, making them ready for the first team a lot earlier."