Lewis Hamilton was "rattled" by the challenge of Max Verstappen last season and had to resort to "desperate" moves to stop the Dutchman, Christian Horner has claimed.
Verstappen would eventually win the title in highly controversial circumstances. But even before that dramatic finale, there were huge flashpoints including several on-track clashes as their title race turned sour.
Speaking on F1's Beyond the Grid podcast, Horner gave some insight into what the battle between the two drivers was like. Asked if each had succeeded in getting into the others' head, he replied: "I think arguably more so in Lewis' head, because he’s a seven-time world champion... he has everything to lose. Max is the young kid that's taking the risks, that's throwing everything at it and has got nothing to lose."