I hate when Spieth does this. Plays so ridiculously wild in the first two rounds and holes a few ridiculous shots, then gets his eye in and you can almost guarantee he'll be on top of the leaderboard tomorrow. Fair play to him, he does deal with the awful places he puts himself in really well.
ON January 1, 2019, information contained in green-reading books will become restricted to "effectively render the books impractical."
Read the Golfweek article: https://golfweek.com/2018/07/19/usga-ra-have-agreed-to-severely-restrict-green-reading-books/