Eminem's surprise appearance during Jelly Roll's performance at Ford Field on Sunday may have even been a surprise to Jelly Roll himself. An Instagram video posted by the country star on Wednesday looks back at the moment when Eminem joined him on stage during his opening set at Post Malone's concert at the Detroit Lions' home. The video is labeled, "The Biggest Surprise Guest of My Entire Career." Learn more at the link in bio! #DetroitNews #JellyRoll #Eminem #Detroit #fordfield #detroitmusic #detroitrap