The Canadian has long been spoken about as a possible top-five player - largely down to his metronomic first shot - and with the men's draw opening up his match with Igor Sijsling on Thursday represented a reasonable chance to progress.
But despite sending down 22 aces, Raonic was undone by the Dutchman on Court 18, losing his way and going down 7-5 6-4 7-6 (7/4).
Consequently the 21-year-old's frustrating run in grand slam competition continues. This was his third second-round exit in succession at Wimbledon, while his best results have been one-off fourth-round appearances on the hard courts of the Australian and US Opens.
For a man with such a bombastic style, it was unsurprising to witness his unforced errors column cost him on Thursday.
Although he sent 48 winners over the net he also made 24 mistakes, allowing the 64th-ranked Sijsling, in just his second Wimbledon, to progress.