The story is titled "Hit in the Head" and adapted from Price's book "Heart of the Game: Life, Death, and Mercy in the Minor League America". The book itself is about Colorado Rockies minor league coach Mike Coolbaugh who was killed by a batted ball while coaching first base in 2007 and much of the SI piece is about the bigger picture of dangers from projectiles faced by baseball players, coaches and fans.
I did a post referencing a different S.L. Price story several weeks ago and was very interested to read about this new book from him... enjoyed his "Far Afield: A Sportswriting Odyssey" quite a bit.
There was quite a bit of press in 2008 about shattered bats and the risk on injury these cause, but not as much attention has been paid to what a batted ball can do. However, as pitcher Joe Martinez of the San Francisco Giants found in a game earlier this month, the batted ball has huge potential for damage... video below: