Could be a championship, a few weeks or a playoff matchup. Basically any obscure player that majority of football and fantasy footballs fans would usually never remember if not for helping you win some weeks/playoff matchup/championship.

For me it is QB Ian Book, currently on the Eagles and formally on the Saints as a rookie.

While Ian Book was not on my team I'll always remember him because in 2021 he was thrust into a starting position vs the Dolphins after the top 3 qb's were injured. It was the semi-finals, I was down 24 (and a couple fractional points). I had the Miami Dolphins D left and Ian Book managed to get sacked eight times, and threw two interceptions. The 2nd INT was with a few minutes left and the game basically secured by Miami; they didn't need to throw. My defense got 25 points because of that last drive INT and I made it to the finals.