Roto fantasy baseball rankings: Top-300 and positional ranksRonald Acuna Jr., outfielder, Atlanta Braves Brian Rothmuller/Icon SportswireEric Karabell, ESPN Senior WriterAug 21, 2019, 04:00 PMCloseESPN contributor on TV, radio, podcasts, blogs, Magazine Charter member of FSWA Hall of Fame Author of "The Best Philadelphia Sports Arguments"Follow on XEmailPrintFantasy baseball is in full swing, which means you need updated rankings.Read on for Eric Karabell's roto rankings, or click here for head-to-head categories or here for points leagues.Top 300Positional rankings