Among that collection of icons is The Undertaker, who posted a photo on his Instagram on Friday to commemorate his advertised appearance. The photo was captioned, "20 years of #Smackdown. Tonight @wweonfox."
After Undertaker failed to appear on the show, he was asked in the Instagram comments by former basketball player-turned-UCLA Bruins analyst Tracy Murray why he was left off of SmackDown.
Undertaker replied to the comment, "I was told I wasn't needed..."
The Undertaker has sporadically appeared on WWE programming throughout 2019, the first year since 2000 in which he did not perform at WrestleMania.
Overall, the 54-year-old wrestling legend has only wrestled twice this year. The first bout was a heavily-criticized match against Bill Goldberg at WWE Super Show-Down in Jeddah, Saudi Arabia back in June. One month later, he and Roman Reigns defeated Shane McMahon and Drew McIntyre at Extreme Rules in Philadelphia.