Top 80 fantasy football rookie rankings for dynasty leaguesMike Williams has the size and ability to be a threat in the red zone for years to come. Getty ImagesMike Clay, ESPN Senior WriterJun 20, 2017, 12:58 PM ETCloseFantasy football, NFL analyst for ESPN.com Member of Pro Football Writers of America Founding director of Pro Football Focus Fantasy 2013 FSTA award winner for most accurate preseason rankingsFollow on XEmailPrintThe rankings below feature rookies only and are best applied to dynasty leagues and rookie drafts. They will be updated as necessary.