The 23-year-old Guillorme started 56 games at shortstop and 52 games at second base last season for Double-A Binghamton, while hitting .283/.376/.331 with 20 doubles and one HR.
"He could have challenged for shortstop honors if the presence of Amed Rosario in New York hadn't led the Mets to shift Guillorme to the other side of the bag last June," Jim Callis writes for MLB.com. "He's not the quickest middle infielder, but his hands, reflexes and instincts are as good as anyone's in the Minors. He has solid range and arm strength, and he would have led the Double-A Eastern League in fielding percentage at both second (.983) and short (.968) last year if he had played enough at either position to qualify."
Guillorme played for the Mets in the Arizona Fall League, and said the focus was on improving his hitting.
"The main thing is being consistent with my swing," he told Baseball America. "I'm trying to drive the ball... be a little quieter with my body and my hands and making sure the hands come through before the body does. That's the main thing I've been working on since the season ended."
"I know people talk about me not having any power, but that's not my game," Guillorme told SNY contributor Adam Rubin last July. "The only thing I worry about is figuring out a way to get to second base -- whether that's a double, whether that's a bunt and a steal. That's really the only thing I focus on when I'm hitting."
See Guillorme's defense on display...
There was also Guillorme's "bat catch" during last year's Spring Training...