When it comes to Arsenal's fastest current player, there are a number of contenders.
Hector Bellerin is widely regardest as the quickest, although Theo Walcott, Alex Oxlade-Chamberlain and Alexis Sanchez would all give him a run for his money.
Until a 100m race of some kind is conducted, there really can be no determining the fastest.
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In a recent interview with FourFourTwo's YouTube channel, Alex Iwobi was asked to name Arsenal's fastest player and typically opted for Bellerin.
"Hector Bellerin," he responded. "I didn't believe it was him until we did the tests and he won. It was crazy."
Shkodran Mustafi has now become the latest to give his verdict and, again, the German centre-back voiced his support for fellow defender Bellerin.
However, as a little bonus, Mustafi brilliantly recalled the moment he discovered just how fast his Spanish teammate is.
In an interview with Goal's Chris Wheatly, he said: "Hector Bellerin. I saw him once running past me and I was like 'oh my word, go ahead and I'll stay here'."
Mustafi was clearly shocked by Bellerin's scintillating speed, which has become a dangerous weapon for Arsenal down the right-hand side.
On so many occasions over the past few years has the 21-year-old full-back scampered up the pitch and left his opponents for dead to set up an attack.
Bellerin has become indispensable at the Emirates Stadium, so it will come as welcome news to teammates and fans alike that he recently dismissed rumours linking him with a return to Barcelona.
"If I wanted to play [at Barcelona] I would have stayed there," he said, per the Evening Standard. "I was very happy when Arsenal showed interest in me and I decided to come here.
"I'm not looking back, I'm just looking to help Arsenal.
"It's nice for a player to know that big teams want you but I'm very happy here. I've still got three years left on my contract so I'm just focused on playing every single week, improving and hopefully making things happen here at Arsenal.
"I'm not in a rush to extend the contract. I'm happy. I'm comfortable. I want to be here a long time."