A “Single-Entry Player” is a DFS player who puts at least 80% of their weekly investment into a single roster.
Each week, I put about 85% to 90% of my investment into a single roster (with the other 10% to 15% being accounted for by some shots in the Millionaire Maker and a few extra bullets in other large-field tourneys). I cannot make a blanket statement to say that this is “the best approach to take in NFL DFS,” as each personality is different — and this means that each DFS player’s “best approach” is different. But . . .