The Blue Jays players grew their hair over the winter:

At least five regulars, and a host of other minor leaguers and major league hopefuls, are sporting long hair, scruffy beards, mutton chop sideburns, goatees and general scruffiness.
The hairstyles of the rich and Blue Jay has never been, well, more hairy.
“It’s something, more than anything else, to have fun with … everyone takes things so seriously,” said Tallet, who is a fan of TV’s That ’70s Show.
Indirectly, it was Johnson’s fault.
Johnson, who had several versions of goatees last season, told Vernon Wells and others at the end of the 2006 season that he was going to put away his razor during the entire off-season. One thing led to another, and the challenge was on.

I sported mutton chops my freshman year of college. Anything lower than that just didn’t grow in well.