By Mike Fast (who else?): Fastball velocity trends over the course of the season. Spoiler: it closely correlates with temperature.
Cubs set-up man Aaron Heilman added a splitter. Details and flight paths.
Putting RJ's Graphing 101 lessons to use. Cahill's start on 4/12. Cahill allowed just 1 ER on 2 hits over 7.1 IP but was the losing pitcher.
Sean Marshall pitch type x batter hand x situation - more here
Stolen from Graham, but Wuertz instead of Springer.