"Like a lot of players in their careers, they've had to overcome things, whether it's poor decisions or poor performance," Rangers farm director Mike Daly said. "They are maturing. To see these guys invest in their careers and put baseball as top priority, to see the results, they are both in a great spot mentally and it's clearly showing on the field."
Guzman was signed by Texas as an amateur free agent out of the Dominican Republic on July 2, 2011. He signed the same day as Nomar Mazara, and they were equally highly regarded. But Mazara is flourishing in the big leagues, while Guzman has had to deal with some injuries, including knee surgery in 2013.