Through the first three innings, Hudson’s fastball registered between 91-93 on the radar gun. Over the last four, he was around 89-90, with an occasional 91. However, I believe (I’m pretty sure, but didn’t keep count) that a majority of his strikeouts came on the fastball, even later in the game. The aforementioned effectiveness of the slider helped keep hitters off-balance. He looked like he used to a two-seamer (85-87), a change (82ish) and a slider that he added to and subtracted from. The slowest one I saw clocked in at 78, the harder ones 81-82.
Jim has video of Hudson and some photos of Hudson too.