<Li> Jump up ^ Shin Lim's act was selected as the sneak preview or "leaked" video on America's Got Talent's social media channels before the actual broadcast . </Li> <Li> Jump up ^ Simon Cowell forced Joseph O'Brien to stop performing during his act . After given the opportunity, O'Brien chose to perform for a second time . His result is based off the second performance . </Li> <P> Guest judge: Martina McBride </P> <P> Date: July 31, 2018 </P>

Who has received the golden buzzer on agt 2018