Here's a list of former Pirates players who currently appear on International League rosters at the Triple-A level. I'll cover the Pacific Coast League in a later post. I'm mostly interested in former Bucs big-leaguers, although I've also listed some other players who have been connected to the Pirates in some way.
Buffalo Bisons (Blue Jays): Tony Sanchez, Chris Leroux. Sanchez signed a minor-league deal with the Blue Jays after the Pirates finally cut bait on their top 2009 draft pick in January. Leroux, since leaving the Pirates organization in 2013, has played in Scranton, the Gulf Coast League, Venezuela, the Dominican, New York, Reading, Lehigh Valley, Colorado Springs and now Buffalo, because that's what one does.
Charlotte Knights (White Sox): Travis Ishikawa, Chris Volstad. Ishikawa signed a minor-league deal with the White Sox in February. He appeared with the Pirates in both 2014 and 2015, somehow posting exactly a .646 OPS each time. Volstad pitched all of two innings for the Bucs last season.
Columbus Clippers (Indians): Tom Gorzelanny, Michael Martinez. The Clippers also have former Pirates prospect Robbie Grossman. Gorzelanny struggled last season in Detroit and probably needs to reestablish himself in Triple-A to get another shot in the big leagues. Martinez is in his second straight year in Columbus after briefly annoying the heck out of Pirates fans in 2014.
Durham Bulls (Rays): Jaff Decker, Kyle McPherson. The Bulls also feature recent waiver claim Jake Goebbert and former Indianapolis pitcher Adam Wilk. Decker signed with the Rays as a minor-league free agent in January after the Bucs non-tendered him. McPherson, now 28, has battled arm problems since a strong rookie season with the Pirates in 2012.
Gwinnett Braves: Chase d'Arnaud. In 2009, d'Arnaud had a breakout season in the low minors, establishing himself as a good prospect at a time when when Pirates prospects weren't exactly growing on trees. After that, though, he just never really improved, and at 29, he appears to have reached his ceiling as a Triple-A vet. He played in the Phillies system last year and signed with the Braves over the winter.
Lehigh Valley IronPigs (Phillies): Bobby LaFromboise. Also featured are former Bucs top pick Mark Appel and offseason-only Pirate Yoervis Medina. LaFromboise will probably get a shot in what appears to be a very unstable Phillies bullpen at some point this year. The Phillies already have two lefties, James Russell and Daniel Stumpf, in their big-league bullpen who have allowed nine runs and six walks while striking out none over two innings. LaFromboise's profile doesn't suggest he'd be a great big-league pitcher in the long haul, but he can do better than that.
Syracuse Chiefs (Nationals): Bronson Arroyo is currently on the DL with a partial rotator cuff tear. He continues to tough it out at age 39, which means that he's now been pitching for 13 years after the Pirates let him go for no reason whatsoever. It would be an upset if he were to make it back to the big leagues at this point, however.
Toledo Mud Hens: Casey McGehee, Argenis Diaz, Michael Crotta. Former Pirates minor-leaguer Dustin Molleken is also here, along with Preston Guilmet, who was on the Bucs' 40-man roster for two months in the 2014-15 offseason. (That Molleken continues to hang on at age 31 is pretty amazing, given that he didn't look like a prospect at all when he played in the Pirates' system from 2003 through 2010. Good for him.) McGehee, of course, played for the Pirates for a half the 2012 season; they dumped him when they acquired Gaby Sanchez. Diaz, meanwhile, collected 36 plate appearances with the Bucs in 2010 and hasn't played in the majors since. Crotta broke camp with the Bucs in 2011 and briefly looked like he had a reasonably promising career in relief ahead of him, but that career was quickly derailed due to arm trouble.
Louisville Bats (Reds): None, although the Bats do feature former Bucs minor-leaguers Ramon Cabrera and A.J. Morris.
Norfolk Tides (Orioles): None, although former Pirates minor-leaguers Andy Oliver, Chaz Roe, Nate Adcock and Todd Redmond all play here.
Scranton/Wilkes-Barre RailRiders (Yankees): None, although Deibinson Romero and Diego Moreno both play here. If you already had to include the words "Scranton/Wilkes-Barre" in your team name, why would you then also give your team some clunky made-up word as a nickname? "RailRiders" certainly is better than "IronPigs," but it's worse than their previous "Red Barons" nickname, and even that arguably had too many words in it.