Magnussen was handed a 10-second penalty in the early laps after contact with Alex Albon, effectively ruining his own race.
However, Haas was then able to use him to slow down rivals while team-mate Nico Hulkenberg – one of only four drivers who didn’t stop under the safety car – opened up a pitstop window that ultimately allowed him to secure 10th place.
What riled RB was not just the blocking tactics but the fact that having landed his first penalty Magnussen had nothing to lose. He then gained an advantage by passing Tsunoda off track, picking up a further 10-second penalty.
“We started him on the medium tyre, and when the safety car came out, pitted him for the hard compound,” said Permane of Tsunoda’s race. “What then happened was a little difficult to take.
“Magnussen drove off the track to deliberately put himself in front of Yuki and then slowed him down by up to two seconds a lap, which allowed Hulkenberg, who hadn’t stopped yet, to create a gap and of course pit in front of all the cars behind.
“That, to me, doesn’t seem correct, and is the very definition of unsportsmanlike behaviour. I’m sure we and other teams will talk to the FIA about it for future races.”
Source: Autosport