Mitch Evans set a late flying lap to top the timesheets after an eventful opening practice session in Monaco.
The Jaguar driver set a 1m 30.361s to go 0.126s faster than Stoffel Vandoorne in the DS Penske, Vandoorne having topped the standings 10 minutes into the session.
Maximilian Guenther and Edoardo Mortara were third and fourth fastest respectively for Maserati, with Jean-Eric Vergne rounding out the top five; Vergne having topped the standings halfway through the session.
Rene Rast was sixth for McLaren ahead of Sergio Sette Camara in the NIO 333, Envision’s Sebastien Buemi, and Andretti’s Andre Lotterer.
Lotterer had made a trip down the escape road at Mirabeau two minutes into the session with a regen issue, which also sidelined Pascal Wehrlein, Antonio Felix da Costa, and Jake Dennis for half the session.
Sam Bird rounded out the top 10 for Jaguar.
Lucas di Grassi also had an eventful session as he had a “complete lock up” at the rear of his car, pitching him into the barrier on the way into St Devote with two minutes to go.
The Brazilian driver was able to get back to the pits with a dangling front wing.