According to data compiled from online tournament platform Smash.gg , which accounts for players signing up for multiple games, a total of 9,173 competitors have registered for the event. Thats a 19.69% increase over the 2018 total of 7,664 players.
With that total, Evo 2019 will be the second-largest iteration to date when ranked by competitor count.
Source: N4G PC Evo 2019 Second-Largest to Date Based on Competitor Count