Max Verstappen is aware that his 100% record at the Dutch home grand prix is under threat on Sunday as other Formula One teams have lately started to make life difficult for the triple world champion and his Red Bull team. Verstappen leads the championship 78 points ahead of McLaren’s Lando Norris but he has not won in four races and only made the podium once in the period. McLaren and Mercedes appear to pose the biggest threat again as F1 ends a four-week summer break at Zandvoort. Verstappen has won his previous three races there since 2021 but admitted that this fourth weekend will “for sur…