RMMA9THPHumble, Texas, USA. 30th Mar, 2018. Ryan Armour (USA) heads down 8 during Round 2 of the Houston Open on March 30, 2018 at Golf Club of Houston in Humble, Texas. Credit: Action Plus Sports/Alamy Live News
RMMA9KY7Humble, Texas, USA. 30th Mar, 2018. Russell Henley during the Houston Open at the Golf Club of Houston in Humble, Texas. Chris Brown/CSM/Alamy Live News
RMMA9TH9Humble, Texas, USA. 30th Mar, 2018. Shane Lowry (IRL) watches his putt on 7 during Round 2 of the Houston Open on March 30, 2018 at Golf Club of Houston in Humble, Texas. Credit: Action Plus Sports/Alamy Live News
RMMA9KW7Humble, Texas, USA. 30th Mar, 2018. Andrew Putnam during the Houston Open at the Golf Club of Houston in Humble, Texas. Chris Brown/CSM/Alamy Live News
RMMA9THNHumble, Texas, USA. 30th Mar, 2018. K.J. Choi (KOR) heads down 8 during Round 2 of the Houston Open on March 30, 2018 at Golf Club of Houston in Humble, Texas. Credit: Action Plus Sports/Alamy Live News
RMMA9M0DHumble, Texas, USA. 30th Mar, 2018. Jordan Spieth in action during the Houston Open at the Golf Club of Houston in Humble, Texas. Chris Brown/CSM/Alamy Live News
RMMA9THDHumble, Texas, USA. 30th Mar, 2018. Aaron Baddeley (AUS) watches his putt on 7 during Round 2 of the Houston Open on March 30, 2018 at Golf Club of Houston in Humble, Texas. Credit: Action Plus Sports/Alamy Live News
RMMA9THGHumble, Texas, USA. 30th Mar, 2018. Brandt Snedeker (USA) reacts to his putt on 7 during Round 2 of the Houston Open on March 30, 2018 at Golf Club of Houston in Humble, Texas. Credit: Action Plus Sports/Alamy Live News
RMMA9KY9Humble, Texas, USA. 30th Mar, 2018. Xinjun Zhang tees off during the Houston Open at the Golf Club of Houston in Humble, Texas. Chris Brown/CSM/Alamy Live News
RMMA9TH1Humble, Texas, USA. 30th Mar, 2018. Geoff Ogilvy (AUS) watches his tee shot on 18 during Round 2 of the Houston Open on March 30, 2018 at Golf Club of Houston in Humble, Texas. Credit: Action Plus Sports/Alamy Live News
RMMA9KW3Humble, Texas, USA. 30th Mar, 2018. Seungsu Han in action during the Houston Open at the Golf Club of Houston in Humble, Texas. Chris Brown/CSM/Alamy Live News
RMMA9TH3Humble, Texas, USA. 30th Mar, 2018. Shane Lowry (IRL) watches his tee shot on 7 during Round 2 of the Houston Open on March 30, 2018 at Golf Club of Houston in Humble, Texas. Credit: Action Plus Sports/Alamy Live News