Zverev had an emotional meltdown in the second set and threw his racquet in disarray. Zverev's outser from the Grand Slam was the second major casualty in the men's draw after defending champion Roger Federer was knocked out by Greece's young turk Stefano Tsisipas.
Raonic made the so called 'evenly poised' encounter a one completely sided affair as he lost complete momentum in the match post breaking Raonic's serve in the opening game.
Zverev was considered one of the hot favourites to win the tournament after his stupendous run at the ATP World Tour finals which saw him beating the likes of Federer and Djokovic to lift the title.