It was a rather quiet afternoon of practice and we've got a pretty limited bit of information.  Barrows put together a quick recap, while Maiocco was off to the A's game and thus missed the late practice.  There's not a lot of info, but still some useful updates:

Injury Updates
While we don't have an update on David Baas, Kentwan Balmer was back in action for some individual drills in the afternoon.  Balmer had sprained his knee in the morning, and thankfully it sounds like it wasn't worse.

Chilo Rachal apparently had to leave the field with a headache.  Barrows said he had a wet towel wrapped over his head.  It was getting pretty warm when I left so maybe he just got dehydrated.

Offense/Defense
It sounds like Shaun Hill had a very solid afternoon of practice.  The 49ers defense was practicing third and short blitz packages, while the offense ran out of the shotgun for the most part.  Hill was apparently 7 of 9, while Smith was 8 of 14.  Barrows ran down Smith's attempts at the link above (and below) so check those out.  No word on Hill's attempts/completions, so it's tough to compare his better completion percentage.

Barrows made a comment about a "fake reverse shovel" to Frank Gore and commented "Who says Jimmy Raye is boring?"  One quick note about the morning practice: In an offensive drill this morning (I believe they were using some of the offense as defensive players), the 49ers included a trick play, although it wasn't super exotic.  The QB threw a quick pass to Dominique Zeigler behind the line of scrimmage and he then passed it upfield to the open receiver.  Nothing spectacular, but glad to see they're mixing in some of the trickeration.

Source
Matt Barrows recap