The Major League Baseball Players Association is faulting the Toronto Blue Jays for not calling up prospect Vladimir Guerrero, Jr., claiming the decision was bad for all involved.

"The union's position on service-time manipulation is clear, Vladimir Guerrero Jr. and other great young talents around baseball have earned the right to play on the field for a major league team," a union spokesman said.

"The decision to not to bring him up is a business decision, not a baseball decision. It's bad for the Blue Jays, it's bad for fans, it's bad for players and it's bad for the industry."

Guerrero wasn't among Toronto's September call-ups, despite being one of baseball's top prospects while tearing up the minor leagues this season.

"It has nothing to do with business," Mark Shapiro told SiriusXM's MLB Network Radio. "It has nothing to do with anything other than we think the best thing for him developmentally is to go play in Arizona (in the fall league there) and continue to develop.

"We think that when he gets here -- which would obviously not preclude him from making the team out of spring training next year, which would be evidence of that fact -- we think he's got a chance to be an impact player."