A slate is a list of games, typically starting around the same time of day.
The most popular NFL slate in DFS is the “Main” slate, which usually has 10 or more games in the regular season.
Some slates includes as few as one game, with multiple DFS contest types related to that game. The Monday Night Football slate is a good example.
Slates with only a few games end up with a lot of lineup duplication because there aren’t as any players to choose from. FanDuel’s “NFL Thursday Million” has been known to have as many as 1,000 ties for the winning lineup, with winners sharing the 1st place prize of $1 million.