The stars were out at Gillette Stadium on Sunday, with a special guest list that included a Patriots Hall of Famer, a music icon, the face of the Boston Celtics, and a pair of young Red Sox stars. Roman Anthony, Marcelo Mayer and Jayson Tatum all were spotted on the field ahead of New England’s Week 3 loss to the Pittsburgh Steelers. In fact, Patriots social media staffer Alexandra Francisco captured a photo of Anthony and Mayer next to rap legend Jay-Z, a frequent guest in Robert Kraft’s luxury box. Regardless, the day ended on a sour note, as New England suffered an embarrassing 21-14 loss to the Steelers. Story continues below advertisementAs for Mayer and Anthony, the former is out for the season due to a wrist injury while the latter is working his way back from an oblique strain — and hoping the Red Sox hold onto a playoff spot without him.