Where does Dean Ambrose rank among the longest-reigning United States Champions ever?

#10 Antonio Cesaro — 239 days

Antonio Cesaro

The Swiss Superman stormed into WWE and made an immediate impact. Antonio Cesaro captured the United States Title from Santino Marella just four months into his WWE career, at the SummerSlam 2013 Pre-Show.

Watch Antonio Cesaro win the United States Championship

After that, Cesaro steamrolled over anyone in his way for 239 days, fending off challenges from Zack Ryder, Justin Gabriel and even WWE Hall of Famer Sgt. Slaughter. On the April 15, 2013 edition of Raw, Kofi Kingston was finally able to put an end to Cesaro’s dominant reign.

Cesaro’s 239 days currently makes him the tenth longest-reigning United States Champion of all time, edging out another WWE Hall of Famer Jimmy “Superfly” Snuka, who held it for 231 days between 1979 and 1980.