Alarm bells are ringing for Sergio Perez after "difficult" practice session

Sergio Perez is not impressed by Red Bull’s performance during practice ahead of the Singapore Grand Prix. In the second free practice session, Perez managed to breach the top ten but could only manage 14th place in FP1. Meanwhile, Max Verstappen only maanged to P15 in FP2. The Mexican sees Red Bull are struggling around the Marina Bay Street Circuit.