Kuchar leads in clubhouse as challengers face elements

Golf – The 146th Open Championship – Royal Birkdale – Southport, Britain – July 21, 2017 USA’s Matt Kuchar plays his approach to the second hole during the second round REUTERS/Paul Childs

American Matt Kuchar bogeyed the 18th hold to slip back to third place at the British Open as joint leaders Jordan Spieth and Brooks Koepka prepared for a Friday afternoon round in challenging conditions.