Didn't see this posted, but Harbaugh got some pretty good heat on his first pitch at the White Sox - Cubs game Wednesday. Looks like he's been practicing a bit since his first pitch for the Tigers.
Will attempt to embed video in comments, but here is the link.
and another from MLB.com
Edit: Looks like he also borrowed Matt Szczur's shoes? You can see him taking them off at the end of the second video.