"Herrera may not have a single knockout tool, but he does many things well," writes Eddy. "In fact, he hit .320 and ranked third in the minors with 139 hits at the end of July, thanks to a quick swing and plenty of hard contact. He has enough power, speed and control of the zone to profile as a big league starter at the keystone."
Herrera was acquired from the Pirates with Vic Black last summer in exchange for John Buck and Marlon Byrd.
He was ranked the organization's ninth-best prospect by MLB.com at the start of the season (MLB.com, Jan. 2014).
"Herrera isn't the biggest guy in the world, he's shown he can really hit and projects to be an above-average hitter in the future, with more power than you'd expect from a guy his size," MiLB.com's Jonathan Mayo said this past winter.
July 25: Herrera is crushing the ball in Double-A. ... Herrera worked to eliminate his leg kick and simplify his swing in St. Lucie, and the result has been a lower strikeout rate this year. He’s struck out fewer times in Double-A, against the best pitching he’s seen in his life, than he did in Single-A. ... So, what’s real, given sample size >> Read more at SNY's Mets Minor League Blog.