WWE announced on Tuesday night's edition of SmackDown Live that the following championship matches have been signed for the brand's upcoming Backlash event, which will take place on September 11th on the WWE Network:

WWE World Championship Match
Dean Ambrose (c) vs. AJ Styles

Six-Pack Challenge to Determine the First-Ever WWE SmackDown Women's Champion
Nikki Bella vs. Becky Lynch vs. Carmella vs. Alexa Bliss vs. Natalya vs. Naomi