F1 2018: Top 5 biggest crashes

#4 Raging Bulls in the Land of Fire

Verstappen and Ricciardo had a race-long battle in Baku

Rule number 1 of motorsport: Don't take your teammate out. Clearly, though, Max Verstappen and Daniel Ricciardo didn't get that memo.

On Lap 40 of 51 of the Azerbaijan Grand Prix, the Red Bulls were battling for fourth place. The pair had clashed and made contact with each other several times during the race but their luck ran out with just over 10 laps remaining.

Verstappen had jumped Ricciardo during the pit-stops thanks to an overcut, and the Aussie was doing everything he could to get back past.

Ricciardo was in the slipstream of Verstappen and moved to the outside to try and force an overtake. The Dutchman covered him off, to which the Honey Badger then instinctively moved to the inside, but nobody could react fast enough to prevent what happened next.

Mad Max cut Ricciardo off in the braking zone and the RBR cars collided, taking both out of the race as a result. This could've easily been a worse crash, as they were going down the longest full-throttle section of the current F1 calendar before making contact, but they thankfully stayed on the ground.