During his home race, Nikita Mazepin had an incident with AlphaTauri's driver, Yuki Tsunoda, blocking him, and receiving a black and white flag (unsportsmanlike behaviour) for this movement.
"It was going through Turn 12," said Michael Masi.
"It was just the move that he came across so late on Yuki who was overtaking with DRS.”
"It's one of those things that we've said a few times and we've issued black and whites for before, it's unsportsmanlike conduct, and not something we're going to tolerate."
Although this incidents have occurred, Masi said there's no need to make an investigation.
"He's probably had a few stewards' visits, but I think if you went through and had a look at it all there are probably other drivers that are up there, or have had more.”
Mazepin currently has six penalty points; if he receives 12 in a one year space, he will obtain a race ban. This penalty points are given by ignoring flags, dangerous driving or causing a collision, and they expire after one year.
"I wouldn't suggest there is anything untoward or a concern.”
"We look at and investigate each incident on its own merits. If it is worth investigating obviously the stewards will investigate it, and they have a look at it based on the evidence that is before them, and then deem if a penalty is or isn't necessary."
During the season, Mazepin has had a couple of incidents with his teammate, Mick Schumacher, and received a penalty point for this in the Italian GP after having a collision with him.
When Masi was asked about investigate the Mazepin's defending style he responded that it was not necessary.
"We judge incidents based on what occurs. Someone's particularly driving style? I would suggest we have got 20 different driving styles, subtly, out there."