So naturally, he has turned his attention elsewhere, including sharing his assessment of Barack Obama's appearance.
Guillen seems to be a bit concerned about the president's hair color. When Obama took office back in 2009, he looked young and had a head full of dark hair. Fast forward almost four years, the stress of the job has clearly taken its toll, with a lot more grey hair atop the first head.
Don't think Guillen hasn't noticed.
"You see Obama from the time he was president to now, he looks like he [expletive] managed the Marlins," Guillen said, according to The Palm Beach Post. "His hair is all white."
Guillen knows all about the stresses that comes with promising a lot and not seeing it all come to fruition. It's probably safe to assume the commander in chief of Miami Marlins baseball has accumulated a grey or two this season as well.
Hat tip to NBC's Off the Bench blog.
Obama photo via Twitter/@BuzzFeedAndrew