Amed Rosario, Mets: The crown jewel of the Mets minor league system, Rosario struck out 49 times in 165 at-bats last season, but his scary speed could translate to 30-35 stolen bases over a full season. He's not going to give fantasy players more than 8-10 homers, yet Rosario can be an under the radar gem if he can produce more hits.
Tim Anderson, White Sox: He's shown he'll hit for double-digit power, but what makes Anderson a sleeper is his 10-for-11 stolen base numbers after the All-Star Break. A 20-20 season isn't out of the question, especially if he can improve his .289 OBP.
Franklin Barreto, Athletics: A blistering start to spring training gives him an outside chance to make the opening day roster. Once he does stake claim to a starting job, Barreto can become an extra base hit machine. His plate discipline will determine if he can be closer to Jose Altuve or Jose Hernandez.
Paul DeJong, Cardinals: No one questions his power. The problem lies with his 0.17 strikeout to walk ratio, a number that screams regression. If DeJong can't improve his plate adjustment, there won't be much of a difference between him and Story.
Zack Cozart, Angels: The poster boy of career years last season, Cozart comes to a new league in a division dominated by pitcher-friendly ballparks along with moving to his new position at third. With a .305 OBP and 92 OPS+ in his career, don't expect Cozart to approach last year's .385 OBP and 141 OPS+.
Marwin Gonzalez, Astros: His versatility will make him overvalued and while he can repeat his 23-homer output from last year's World Series run, it's the other numbers that are cause for concern. Gonzalez's OBP was 84 points higher than 2016 while his OPS was 213 points better. There's regression waiting to happen.