Brown: No surprise here. He was added in the off-season when the team let Erik Kratz go to provide organizational depth. Depending on Jason Jaramillo's situation, Brown will start or back-up in Indy. (EDIT by Charlie: Dunlap also reports that Chris Snyder was scratched from today's game and continues to have back issues, so it now looks very possible that Jaramillo will make the big-league team. It remains to be seen whether Snyder will have to go on the DL.)
Burres: This is at least a little surprising, and for me, in a good way. Burres is one of the few healthy lefties still in the major league camp and he can both start and relieve, but he just isn't that good. I figured he had a decent chance to make the team only because he was left-handed. He will probably be a back-end starter in the Indy rotation.
Wimberly: Not a surprise. It will be interesting to see how the Pirates use him in Indy.
The demotion of Burres suggests that Garrett Olson has made the team, but if he gets bombed the next two days I would again expect the Pirates to scour the waiver wire and look for an upgrade. If Pearce has made the team, the last position spot is down to Jaramillo, Josh Rodriguez or John Bowker, although there could be an additional spot if Snyder goes on the DL.
Michael Crotta, Chris Leroux and Jose Ascanio are all candidates for one of the two open bullpen spots. Crotta's excellent spring would seem to give him the edge. Ascanio probably has the best arm, but as Ray Searage told me yesterday, he needs to build up his strength and get to the point that he can pitch back-to-back days. He is on the 40-man and I would expect the Pirates to put him on the DL. He has yet to pitch in a major-league spring training game, but he did pitch one inning and throw 24 pitches in a minor-league game yesterday with no discomfort.