"Global Exploration Rankings!"
"Ranking One: Bug Clan Player, Darren West."
"Exploration Score: 0.01%."
Only one player's exploration score is not 0%, even though Top 2 has an exploration score of 0%.
They are able to rank ahead of those with the same 0% score because their actual exploration progress is higher. After all, only two decimal points are displayed, while the rest is not shown.
As for them, their names can't be seen as only the top 10,000 players can be listed on the ranking.
They don't make it to the list, meaning that they are not within the top 10,000 players worldwide.
Players on the list will receive an additional reward when the event ends.
But they are not in a hurry as they are just trying to understand the general rules and gameplay of this copy. Once everything is clear, they can begin exploring the map without restraint.
The quickest way to explore a map, of course, is to destroy a location.