Charles Leclerc (MON) Alfa Romeo Sauber F1 Team walks the track through the tunnel with Xevi Pujolar (ESP) Alfa Romeo Sauber F1 Team Head of Track Engineering and Ruth Buscombe (GBR) Alfa Romeo Sauber F1 Team Race Strategist at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Charles Leclerc (MON) Alfa Romeo Sauber F1 Team walks the track at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Pierre Gasly (FRA) Scuderia Toro Rosso signs autographs for the fans at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Valtteri Bottas (FIN) Mercedes-AMG F1 at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Lewis Hamilton (GBR) Mercedes AMG F1 arrives at the track on his MV Agusta motorbike at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Esteban Ocon (FRA) Force India F1 signs autographs for the fans at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Valtteri Bottas (FIN) Mercedes-AMG F1 at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Ferrari SF-71H in the garage with halo mirrors at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Charles Leclerc (MON) Alfa Romeo Sauber F1 Team walks the track at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Mercedes-AMG F1 W09 EQ Power+ rear wing at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Force India F1 walk the track at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Jerry Andre/Sutton Images
Esteban Ocon (FRA) Force India F1 signs autographs for the fans at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Romain Grosjean (FRA) Haas F1 walks the track at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Franz Tost (AUT) Scuderia Toro Rosso Team Principal at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Force India F1 mechanic and Pirelli tyres at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Ferrari SF-71H front wing detail at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Ferrari SF-71H halo wings at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Lewis Hamilton (GBR) Mercedes-AMG F1 waves at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Marcus Ericsson (SWE) Alfa Romeo Sauber F1 Team walks the track at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Mercedes-AMG F1 W09 EQ Power+ bodywork at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Ferrari SF-71H in the garage at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Carlos Sainz jr (ESP) Renault Sport F1 Team at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Charles Leclerc (MON) Alfa Romeo Sauber F1 Team, Sebastian Vettel (GER) Ferrari, Lewis Hamilton (GBR) Mercedes-AMG F1 and Romain Grosjean (FRA) Haas F1 in the Press Conference at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Sebastian Vettel (GER) Ferrari in the Press Conference at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Manuel Goria/Sutton Images
Charles Leclerc (MON) Alfa Romeo Sauber F1 Team walks the track at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Lewis Hamilton (GBR) Mercedes-AMG F1 MV Agusta motorbike at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Pit lane at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Boats in the Harbour at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Red Bull Racing Energy Station at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images
Mercedes-AMG F1 W09 EQ Power+ bodywork at Formula One World Championship, Rd6, Monaco Grand Prix, Preparations, Monte-Carlo, Monaco, Wednesday 23 May 2018. © Mark Sutton/Sutton Images