David Coulthard won't attempt to pinpoint the reasons for Oscar Piastri's alarming slump, saying anything from mental fatigue to car issues could be the problem.
But McLaren's equal-most experienced driver is backing Piastri to bounce back and go toe-to-toe with championship leader Lando Norris and Red Bull heavyweight Max Verstappen at the penultimate Qatar Grand Prix.
The title hunt is delicately poised after a dramatic ending to last week's Las Vegas Grand Prix.