After seven races of mutual respect and cordial competition, the 2017 Formula 1 title battle between Lewis Hamilton and Sebastian Vettel finally got physical on the streets of Azerbaijan.
A chaotic recipe of multiple collisions on a tightly enclosed street circuit, leading to multiple safety car periods and restarts, created conditions for the first controversial moment between this F1 season's two chief protagonists.
Had the Azerbaijan Grand Prix proceeded free of safety car periods, Hamilton and Vettel would most likely have finished one-two comfortably, with Hamilton slashing Vettel's championship points advantage into single digits by winning the race.