Today, the 2010 Arizona Fall League teams rosters were announced at MiLB.com. The Pirate minor league position players participating are Andrew Lambo, Jordy Mercer, Josh Harrison, and Tony Sanchez.
EDIT: Per DK, three pitchers will also be selected. I'd guess they'd be guys who missed time this year, and could use some extra innings. Colton Cain, perhaps? Trent Stevenson? Is it possible that Taillon goes also?
UPDATE by Charlie: I think Cain, Stevenson and especially Taillon are all very unlikely - usually AFL picks have a little more experience than those guys. I bet Brett Lorin will be there, though.