After a horror start to The Sentry, Cam Davis posted the joint-best second-round score of the day to claw his way into the top 20 in the field. The Sentry After 36 holes 16-under Hideki Matsuyama 15-under Collin Morrikawa 14-under Tom Hoge 14-under Thomas Detry 14-under Corey Conners 14-under Maverick McNealy 9-under Cam Davis 9-under Adam Scott Davis fired a …