The Pirates and Triple-A Indianapolis agreed yesterday to extend their player development contract four years through the 2012 season, bringing the number of International League clubs whose contracts expire after this season down to six.

Six affiliates have extended their PDCs since we first ran the chart in late February, including Indianapolis, Triple-A Fresno, Triple-A Tucson, Triple-A Colorado Springs, Double-A Binghamton and Double-A Montgomery.

Below is a league-by-league update on teams’ PDCs (deals expiring after the 2008 season are in bold).

INTERNATIONAL LEAGUE (Triple-A)
PDCs expiring after 2008 season: 6.
Buffalo Bisons – Indians (PDC expires after 2008 season)
Charlotte Knights – White Sox (2010)
Columbus Clippers – Nationals (2008)
Durham Bulls – Rays (2008)
Gwinnett County – Braves (owned by Atlanta)
Indianapolis Indians – Pirates (2012)
Lehigh Valley IronPigs – Phillies (2008)
Louisville Bats – Reds (2010)
Norfolk Tides – Orioles (2010)
Pawtucket Red Sox – Red Sox (2010)
Rochester Red Wings – Twins (2008)
Scranton/Wilkes-Barre Yankees – Yankees (2010)
Syracuse Chiefs – Blue Jays (2008)
Toledo Mud Hens – Tigers (2010)

PACIFIC COAST LEAGUE (Triple-A)
PDCs expiring after 2008 season: 7.
Albuquerque Isotopes – Marlins (2008)
Colorado Springs Sky Sox – Rockies (2010)
Fresno Grizzlies – Giants (2010)
Iowa Cubs – Cubs (2012)
Las Vegas 51s – Dodgers (2008)
Memphis Redbirds – Cardinals (2008)
Nashville Sounds – Brewers (2010)
New Orleans Zephyrs – Mets (2008)
Oklahoma RedHawks – Rangers (2010)
Omaha Royals – Royals (2008)
Portland Beavers – Padres (2008)
Round Rock Express – Astros (2010)
Sacramento River Cats – Athletics (2010)
Salt Lake Bees – Angels (2012)
Tacoma Rainiers – Mariners (2008)
Tucson Sidewinders – Diamondbacks (2010)

EASTERN LEAGUE (Double-A)
PDCs expiring after 2008 season: 5.
Akron Aeros – Indians (2008)
Altoona Curve – Pirates (2010)
Binghamton Mets – Mets (2010)
Bowie Baysox – Orioles (2010)
Connecticut Defenders – Giants (2008)
Erie SeaWolves – Detroit (2010)
Harrisburg Senators – Nationals (2010)
New Britain Rock Cats – Twins (2008)
New Hampshire Fisher Cats – Blue Jays (2012)
Portland Sea Dogs – Red Sox (2012)
Reading Phillies – Phillies (2008)
Trenton Thunder – Yankees (2008)

SOUTHERN LEAGUE (Double-A)
PDCs expiring after 2008 season: 6
Birmingham Barons – White Sox (2010)
Carolina Mudcats – Marlins (2008)
Chattanooga Lookouts – Reds (2008)
Huntsville Stars – Brewers (2008)
Jacksonville Suns – Dodgers (2008)
Mississippi Braves – Braves (owned by Atlanta)
Mobile BayBears – Arizona (2008)
Montgomery Biscuits – Rays (2010)
Tennessee Smokies – Cubs (2012)
West Tenn Diamond Jaxx – Mariners (2008)

TEXAS LEAGUE (Double-A)
PDCs expiring after 2008 season: 3
Arkansas Travelers – Angels (2008)
Corpus Christi Hooks – Astros (2010)
Frisco RoughRiders – Rangers (2010)
Midland RockHounds – Athletics (2012)
San Antonio Missions – Padres (2008)
Northwest Arkansas Naturals – Royals (2008)
Springfield Cardinals – Cardinals (owned by St. Louis)
Tulsa Drillers – Rockies (2010)

CALIFORNIA LEAGUE (HiA)
PDCs expiring after 2008 season: 8
Bakersfield Blaze – Rangers (2010)
High Desert Mavericks – Mariners (2008)
Lake Elsinore Storm – Padres (2008)
Lancaster JetHawks – Red Sox (2008)
Modesto Nuts – Rockies (2008)
Rancho Cucamonga Quakes – Angels (2010)
Inland Empire 66ers – Dodgers (2008)
San Jose Giants – Giants (2008)
Stockton Ports – Athletics (2008)
Visalia Oaks – Diamondbacks (2008)

CAROLINA LEAGUE (HiA)
PDCs expiring after 2008 season: 6
Frederick Keys – Orioles (2010)
Kinston Indians – Indians (2008)
Lynchburg Hillcats – Pirates (2008)
Myrtle Beach Pelicans – Braves (2008)
Potomac Nationals – Nationals (2010)
Salem Avalanche – Astros (2008)
Wilmington Blue Rocks – Royals (2008)
Winston-Salem Warthogs – White Sox (2008)

FLORIDA STATE LEAGUE (HiA)
PDCs expiring after 2008 season: 1
Brevard County Manatees – Brewers (2010)
Clearwater Threshers – Phillies (owned by Philadelphia)
Daytona Cubs – Cubs (2012)
Dunedin Blue Jays – Blue Jays (owned by Toronto)
Fort Myers Miracle – Twins (2008)
Jupiter Hammerheads – Marlins (owned by Florida)
Lakeland Flying Tigers – Tigers (owned by Detroit)
Palm Beach Cardinals – Cardinals (owned by St. Louis)
St. Lucie Mets – Mets (owned by New York
Sarasota Reds – Reds (owned by Cincinnati)
Tampa Yankees – Yankees (owned by New York)
Vero Beach Devil Rays – Tampa Bay (owned by the Dodgers)

MIDWEST LEAGUE (LoA)
PDCs expiring after 2008 season: 7.
Beloit Snappers – Twins (2010)
Burlington Bees – Royals (2010)
Cedar Rapids Kernels -Angels (2010)
Clinton Lumber Kings – Rangers (2008)
Dayton Dragons – Reds (2008)
Fort Wayne Wizards – Padres (2008)
Great Lakes Loons – Dodgers (2008)
Kane County Cougars – Athletics (2008)
Lansing Lugnuts – Blue Jays (2010)
Peoria Chiefs – Cubs (2012)
Quad Cities River Bandits – Cardinals (2010)
South Bend Silver Hawks – Diamondbacks (2008)
West Michigan Whitecaps – Tigers (2010)
Wisconsin Timber Rattlers – Mariners (2008)

SOUTH ATLANTIC LEAGUE (LoA)
PDCs expiring after 2008 season: 11
Asheville Tourists – Rockies (2008)
Augusta GreenJackets – Giants (2008)
Charleston Riverdogs – Yankees (2008)
Columbus Catfish – Tampa Bay (2008)
Delmarva Shorebirds – Orioles (2010)
Greensboro Grasshoppers – Marlins (2008)
Greenville Drive – Red Sox (2012)
Hagerstown Suns – Nationals (2008)
Hickory Crawdads – Pirates (2008)
Kannapolis Intimidators – White Sox (2010)
Lake County Captains – Indians (2010)
Lakewood Blue Claws – Phillies (2008)
Lexington Legends – Astros (2008)
Rome Braves – Braves (owned by Atlanta)
Savannah Sand Gnats – Mets (2008)
West Virginia Power – Brewers (2008)

New York-Penn (Rookie)
PDCs expiring after 2008 season: 8
Aberdeen IronBirds – Orioles (2010)
Auburn Doubledays – Blue Jays (2010)
Batavia Muckdogs – Cardinals (2008)
Brooklyn Cyclones – Mets (owned by New York)
Hudson Valley Renegades – Rays (2008)
Jamestown Jammers – Marlins (2008)
Lowell Spinners – Red Sox (2008)
Mahoning Valley Scrappers – Indians (2008)
Oneonta Tigers – Tigers (2010)
State College Spikes – Pirates (2010)
Staten Island Yankees – Yankees (owned by New York/Mandalay)
Tri-City ValleyCats – Astros (2008)
Vermont Lake Monsters – Nationals (2008)
Williamsport Crosscutters – Phillies (2008)

NORTHWEST LEAGUE (Rookie)
PDCs expiring after 2008 season: 6
Boise Hawks – Cubs (2010)
Eugene Emeralds – Padres (2008)
Everett AquaSox – Mariners (2008)
Salem-Keizer Volcanoes – Giants (2008)
Spokane Indians – Rangers (2008)
Tri-City Dust Devils – Rockies (2008)
Vancouver Canadians – Athletics (2010)
Yakima Bears – Diamondbacks (2008)

PIONEER LEAGUE (Rookie)
PDCs expiring after 2008 season: 3
Billings Mustangs – Reds (2010)
Casper Ghosts – Rockies (2008)
Great Falls Voyagers – White Sox (2010)
Helena Brewers – Brewers (2008)
Idaho Falls Chukars – Royals (2008)
Missoula Osprey – Diamondbacks (2010)
Ogden Raptors – Dodgers (2010)
Xx Orem Owlz – Angels (2012)