From a 4.92 ERA in 2015 to a Cy last season. Who's the real Rick Porcello? Plus Evan Longoria, Brett Gardner, Drew Smyly and Marcus Semien.

Aledmys Diaz impressed with a breakout rookie season in 2016, batting .300 with 17 HR. Does he have the skills to do it again? Plus Blake Snell, Yasiel Puig, Aaron Judge and Arodys Vizcaino.

Billy Hamilton swiped 58 bases in 2016, but is there reason to believe he could make a run at 80 SB in 2017? Plus Hernan Perez, Joe Ross, Fernando Rodney, and Adonis Garcia.

Coming off back-to-back injury-plagued seasons, Hunter Pence is no longer a lock for 600-plus at-bats. But can he still provide the same type of value when on the field? Plus, Matt Wieters, Logan Forsythe, Jeff Samardzija, and Wade Davis.

Jose Bautista re-upped with the Blue Jays during the off-season; can he recover his lost power? Also Darvish, JD Martinez, Miley, and Valencia.

Ian Kinsler powered up to the tune of 28 HR en route to a near-$30 season in 2016. At 35, can he keep it up? Plus Carlos Carrasco, Rajai Davis, Chris Devenski, and Tyler Saladino.

Ken Giles is finally getting a shot at a full season as closer—does he have the skills to be an elite saves option? Plus Steven Matz, Jorge Polanco, Austin Hedges, and Raul Mondesi.

Marcell Ozuna enjoyed a stellar 1H, but a 2H fade prevented him from having a breakout season. Could he threaten the 30 HR plateau in 2017? Plus Stephen Piscotty, Shawn Kelley, Travis d'Arnaud, and Robbie Ray.

Kenta Maeda had no trouble adjusting to life in the major leagues in 2016. What will he do for an encore? Plus, Adam Conley, Josh Bell, Jedd Gyorko, and Denard Span.

Matt Holliday brings his power bat to Yankee Stadium. Will it play despite his "advanced" age? Also Verlander, Sandoval, McHugh, and Maybin.

Nelson Cruz has run more HR trots than any other hitter the past three years. At 37, can he keep it up? Plus Craig Kimbrel, Didi Gregorius, Jake Odorizzi, and Mike Zunino.