Matt Wallace finds much-needed form to grab first-round lead at Byron Nelson

The 34-year-old opened with three straight birdies and carried his momentum throughout the day to head into the clubhouse on eight under.

He leads by one stroke from a pack of seven players, with three more a further shot back.

Wallace was forced to watch the Masters from home, having failed to qualify following a poor season, and he took the time to observe the world's best and see how they got the job done.

Asked if Scottie Scheffler was among the players he was watching, he replied: "Well, him, but, I mean, so good that it's difficult to take a lot from him because he's playing unbelievable golf. It's not as realistic for everyone else out there."

Defending champion Jason Day trails by three after dropping shots on two of his final five holes.

Jordan Spieth was unable to maintain a strong start as he split a birdie and bogey down the stretch to finish on three under.

He said following his round: "It's a very gettable golf course.

"I just played the easy holes poorly. That was kind of the story of the day."

The first round will resume early on Friday after wet weather delayed the start of Thursday's play.