Hi, I'm going to Phoenix on saturday. I have a bunch of stuff planned including Sedona, and a Diamondbacks game. Does anyone have any good suggestions for anything fun to do?

My favorite thing in Phoenix was the Boyce-Thompson Arboretum.It was fabulous.
http://ag.arizona.edu/BTA/

Without knowing much of what you are interested in, it's hard to provide precise ideas, but here are a few - hike Squaw (recently renamed Piestewa)Peak or Camelback Mountain, visit the Desert Botanical Gardens, see a ballgame (as you plan to do). In Sedona, there's more hiking and the Pink Jeep tours, which are always fun for first-time visitors.

Enjoy your trip!

I think the dbacks will be out of town

Boyce Thompson Arboretum is not in Phx; it's in Globe, AZ, so it's a drive to get there. Also, Squaw Peak has not been renamed Piestawa Peak. There is a movement to do so but there has been no official name change at this time.

In all due respect to the previous poster, it is in fact now PIESTAWA PEAK.