Top 20 flex players for Week 2 of your fantasy league

Week 1 of fantasy football season is in the books, and it was a strange one. With David Johnson's debilitating wrist injury and a number of surprising offensive performances, there could be a flurry of transactions in your league this week.

The first week of play is often unpredictable, but many of this year's top performers were especially unexpected. A pair of Kansas City Chiefs, Kareem Hunt and Alex Smith, were the most valuable players in PPR leagues, and a whopping four defenses - Los Angeles, Jacksonville, Baltimore and Philadelphia - ranked inside the top 20.

Lost in the shuffle were many of the game's top flex options. While several of these players underperformed by a wide margin, it's too early to draw any definitive conclusions; even in a 16-game season, one contest is too small of a sample size. Below, check out the NFL's top 20 flex players - running backs, wide receivers and tight ends - ranked according to projections for Week 2 and overall outlook.