You can add Cesaro vs. Rob Van Dam to the WWE SummerSlam card, which will be the “Kickoff Pre-show Match”.
With this addition, the final card looks to have 9 total matches, with the rest of the card below.
WWE World Heavyweight Championship
John Cena (c) vs. Brock Lesnar
WWE Intercontinental Championship
The Miz (c) vs. Dolph Ziggler
WWE Divas Championship
AJ Lee (c) vs. Paige
Flag Match
Rusev vs. Jack Swagger
Lumberjack Match
Seth Rollins vs. Dean Ambrose
Chris Jericho vs. Bray Wyatt
Randy Orton vs. Roman Reigns
Stephanie McMahon vs. Brie Bella