With Jacoby Ellsbury's best days behind him, can he still contribute to the Yankees' playoff push? Also Kintzler, Moss, A. Sanchez and R. Davis.

Gary Sanchez was the talk of 2016's second half; how's the encore going? Plus Michael Fulmer, Nelson Cruz, Danny Duffy and Brett Gardner.

Is Max Scherzer the best SP in baseball? How do A.J. Pollock's 2017 skills compare to those of his $46 2015 season? Plus Christian Yelich, Danny Duffy, and Didi Gregorius.

Paul Goldschmidt is the only player in MLB this season to have a .300+ BA with at least 20 HR and 15 SB. Can he keep it going? Plus Wil Myers, Trevor Rosenthal, Brandon Phillips, and Chad Kuhl.

Trevor Cahill's emergence has been one of the biggest surprises of 2017. Is his success sustainable? Plus, Jerad Eickhoff, Billy Hamilton, Keon Broxton, and J.T. Realmuto.

Cameron Maybin, at the age of 30, is on pace for the best season of his career. What's behind the breakout?

Josh Donaldson struggles to make a contribution after his return from injury. Also Hamels, J. Abreu, Kimbrel, and B. Miller.

In the Year of the Power Spike, George Springer might just stand out the most. How's he doing it? Plus Bud Norris, Delino DeShields Jr., Drew Pomeranz, and Evan Gattis.

Sean Newcomb is one of the highest-rated pitching prospects to reach the majors in 2017—do his early skills offer a glimpse of his potential? Plus, Daniel Gossett, Raimel Tapia, Jaycob Brugman, and Rey Fuentes.

Joey Votto has reached the 30 HR plateau just once in his illustrious career, but he went into the All-Star break with a National League leading 26. What's behind the surge? Plus Josh Bell, Felipe Rivero, Willson Contreras, and Mike Foltynewicz.

Yoenis Cespedes has been slowed by injuries throughout much of the first half, but could make a huge impact if he can stay healthy in the second half. Plus, Austin Hedges, Joe Panik, Stephen Strasburg, and Zach Davies.