Brooks Koepka 1 back, Scottie Scheffler lurks at Byron Nelson

Brooks Koepka holds a one-shot deficit at the Byron Nelson tournament, keeping him firmly in contention heading into the later rounds. World number one Scottie Scheffler is positioned close to the lead, making him a significant threat at the event. The tournament is shaping up to be a compelling contest between several top-ranked players on the PGA Tour.