Lewis Hamilton's testing schedule with Pirelli has been cut short after he felt unwell during Tuesday's running in Abu Dhabi.
The championship runner-up was in the car on Tuesday morning, taking part in Pirelli's final 2017 tyre test alongside Ferrari and Red Bull at the Yas Marina Circuit. However, with the triple world champion feeling unwell, Pascal Wehrlein was placed on standby by Mercedes.
After completing the early runs on Tuesday, Hamilton then curtailed his time in the car, with Mercedes confirming Wehrlein has replaced him to complete the rest of the day's schedule.
Tuesday marked Hamilton's first test of the wider 2017 tyres, with Nico Rosberg and Wehrlein having completed all of the Mercedes testing with Pirelli up to this point.
Hamilton was back in the car just two days after winning the Abu Dhabi Grand Prix, but losing out in the world champion battle to team-mate Rosberg for the first time.
Daniel Ricciardo is testing for Red Bull on Tuesday, while Kimi Raikkonen is at the wheel for Ferrari as Pirelli concludes its testing schedule ahead of the introduction of new tyre dimensions alongside new aerodynamic regulations in 2017.