SmackDown Preview: 8/20/15

8-Man Tag Match: Dean Ambrose, Roman Reigns, Randy Orton & Cesaro VS Bray Wyatt, Luke Harper, Sheamus & Kevin Owens

Ryback VS Big Show

Dolph Ziggler will address the WWE Universe

Divas Triple Threat Match: Becky Lynch VS Sasha Banks VS Brie Bella

What Mayhem will transpire prior to SummerSlam?

Source: WWE.com