That rough stretch continued in New Orleans, as he went 1-for-16 in his first five games. But he was able to figure out the issues with his swing and drum up a .303 average in his last 16 games.
"Yeah, I wasn't doing so well at the beginning, coming down from the big leagues and all that," Hernandez said. "But I got the Astros to send me video from when I was doing well and that helped me get back to it."
Staying hot might be hard for Hernandez, though, as he won't be getting a lot of playing time yet. He and Justin Bour, also called up on Tuesday, will play off the bench for now. Miami is still poised to fight for a National League Wild Card spot, and manager Mike Redmond will stick with the players he's had all season to make that happen.
"The guys that have been grinding and playing, those guys are gonna play," Redmond said. "It's a great opportunity for guys to come up and be a part of us trying to make the playoffs. But the guys that we've been running out there are the guys that are gonna play."
Hernandez's ability to play all over the field won't go fully untapped, though. He might not be able to stage a full audition for his future role with the Marlins, but he will still be a factor, especially defensively.
"This is a time where we've seen these guys a little bit -- haven't seen them for an extended period of time -- these guys will be options for us off the bench," Redmond said. "As far as how much they play or pinch-hit will be determined as we go. … [Hernandez] can play a lot of positions. It's always nice to have versatile pieces on the bench."
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter