Pirates ace Chris Archer appeared floored by the child sexual assault allegations against his teammate, Felipe Vazquez ... saying the crimes he's accused of are "heinous" and he hopes they're not true.
"I do have a 14-year-old sister," Archer told media in the Pirates' clubhouse before taking on the Mariners in Pittsburgh on Tuesday. "So, it's something that hits home."
Vazquez was arrested Tuesday morning after authorities in both Pennsylvania and Florida say they have evidence he tried to have a sexual relationship with a 13-year-old girl.
Felipe is facing MULTIPLE serious charges ... including felony statutory sexual assault, felony unlawful contact with a minor and felony solicitation of a child.
When Archer spoke about the accusations, he told media members, "In the U.S., you're innocent until proven guilty. So, until due process is completely played out, we're hoping that this stuff's not true."