Koepka makes storming eight-under start as Scheffler lurks in Texas

Brooks Koepka fired a storming eight-under 63 to take the clubhouse lead in the first round of the The CJ Cup Byron Nelson in Texas.

Four days on from the conclusion of the PGA Championship, won by Englishman Aaron Rai, regular tour action in the US resumed at TPC Craig Ranch with world No 1 and defending tournament champion Scottie Scheffler headlining the field.