On the April 9 episode of "Raw", Hardy returned from injury, where he assisted Finn Bálor and Seth Rollins in a confrontation with The Miz and The Miztourage (Bo Dallas and Curtis Axel). Later that night, Hardy teaming up with Bálor and Rollins to defeat Miz and Miztourage. The following week on "Raw", Hardy defeated Jinder Mahal to win the United States Championship, making him the second person to complete the modern Grand Slam, after completing the original format separately. The next day, Hardy was traded to the SmackDown brand as part of the Superstar Shake-up, and took the title with him. Later on that day, Hardy defeated Shelton Benjamin in his first match on the SmackDown brand since 2009. Hardy retained his title against Jinder Mahal at the Greatest Royal Rumble event on April 27, and against Randy Orton at Backlash on May 6. Two days later on the May 8 episode of SmackDown Live, Hardy lost to The Miz in a qualifying match for the 2018 pay-per-view Money in the Bank ladder match. Two weeks later on the May 22 episode of SmackDown Live, Hardy faced Daniel Bryan in an attempt to earn another Money in the Bank qualifying match, which he lost.