Some basketball players just aren't good foul shooters, but hopefully bring enough to the table that they make up for it (our 2004 NC team had three bad foul shooters in the starting five in Okafor, Boone and Taliek). Plus he's a couple games into his career and is still adjusting to shooting foul shots in big arenas with 10,000 people in them (and TV cameras), which is a factor too. You can get into the flow of a game and block out the crowd, but the free throw line is different - non basketball players can be excellent at free throws because it is the athletic equivalent of darts or bowling. Drummond also has to learn a ton of things right now - the complexities of a college offense, individual post moves, hedging screens, when to give help defense, etc. - a complete deconstructing of his free throw shooting, as valuable as it might be, is probably going to need to be an offseason project.