Let it be known: pre-draft workouts are rather meaningless, both for mock drafters and for fans looking for any indication of whom their team may select.
Ideally, when evaluating talent, a front office will look at a player's entire body of work as an amateur player. While a personal workout can perhaps give a team a better feel for a player's ability or his mental makeup, more often than not, a single workout will not drastically change a team's opinion of that player.
But since you asked -- and since I was a wee bit curious myself -- I went fishing for a pre-draft workout list. Here's what I found:
Adidas EuroCamp Workouts (Bismack Biyombo, Donatas Motiejunas):
Daryl Morey was in attendance.
Fun Little Tidbit From A Chad Ford Chat:
Mike (Houston) What are the Rockets plans? Is Morey trying to move up in the draft?
Chad Ford (1:44 PM) Morey is always trying to move. He's one of the most active GMs in the league and I think, right now, virtually everything and everyone is on the table. As far as predicting their draft ... 14 is where things really start to break down ... lots of options ... Biyombo, Hamilton, Tobias Harris, Marcus Morris, Nikola Vucevic.
This is not a complete list of workouts, I'm sure. Not all workouts will leak into the public. More than anything, it's difficult to put together a timeline.
Also, for the record, in putting together this list, I came across a number of mock drafts or draft posts from good outlets and nearly each player capable of going in the lottery or even in the top twenty was said to have earned Houston's "interest." Face it: it's going to be tough to predict just what Houston will do in this draft.
Now, whom did I leave off the list?
All workouts courtesy of HoopsHype, Draft Express, The Hoops Report and interviews found elsewhere on team sites such as Bobcats.com and ESPNChicago.com.