Red Bull boss Christian Horner says Mercedes operational errors this season demonstrate why it is so important his team closes the gap and put the world champions under increased pressure at the front.
Lewis Hamilton was given a ten-second time penalty at the Russian Grand Prix which cost him the chance of victory, meaning he finished third behind Red Bull's Max Verstappen. The penalty was given after the world champion conducted two practice starts from the wrong part of the pit-lane ahead of the race, having been given the go-ahead by Mercedes.
Hamilton also lost what looked like a routine victory at the Italian Grand Prix when Mercedes called him into the pits when it was closed.