Friday, 08 September 1989
Salt Palace
Salt Lake City, UT, USA
supporting Metallica
[No setlist details]
Confirmation:
Rolling Stone "On The Road" Issue 560 (7th Sep 1989)

Salt Lake City show mentioned in various interviews as the show the band recieved a bad reaction supporting Metallica in 1989. The date for this show is assumed to be the date mentioned here at Encylopedia Metalica.

http://www.encyclopedia-metallica.com/live/584.shtml
On This Day:
Year Venue State/Country
1990 Pine Of Music Theatre, Clarksteen MI, USA
2015 Red Rocks Amphitheatre, Denver CO, USA