The EPL website displays the results of the vote for the best player in the first week. The result is that Richarlison is the best player with 27%. Perhaps this vote is not entirely accurate because it is possible that the votes were not evenly distributed and were not objective. But what do you think? Of all the players, they were indeed key players in the first match with the team.
Source:
https://www.premierleague.com/en/news/4380618/vote-who-was-the-best-player-of-matchweek-1