Following an earlier report mentioning Chris Jericho will be at Madison Square Garden for a house show on July 12th, the MSG website has announced Jericho's role for the 'Summerslam Heatwave' show.
Jericho will be on hand for a new edition of the Highlight Reel, but no mention was made of him wrestling a match as well. No guest has been announced yet, but a full rundown of the announced card can be read below:
WWE Lumberjack Match returns to the World’s Most Famous Arena after over 25 years!
Chris Jericho returns to the Garden with his Highlight Reel for the first time in 2 years!
John Cena vs. Bray Wyatt in a 20-Man Lumberjack match for the WWE World Heavyweight championship
– 10 men led by WWE Hall of Famer Ric Flair & 10 men led by Triple H! –
Sheamus vs. Randy Orton vs. Alberto Del Rio
– Triple Threat Match for the WWE United States Championship –
Also see all your favorite Superstars including:
Mark Henry
The Uso’s
Goldust & Stardust
Ryback
Fandango
Santino Marella
And Many More!
*card is subject to change*
Subject: Updated MSG Live Event Info, What Is Chris Jericho’s Role On The Card? 
