Trades in Major League baseball may happen anytime from the end of the World Series in the fall, until the month of July the following summer. In August players can be traded, but they must first clear waivers, and they cannot be on a team’s 40 man roster.

Major League baseball teams keep two kind of roster the first the 25 man MLB roster are the players available to play in Major League baseball games, and the 40 man roster which includes the 25 man roster plus up to 15 players who are on the disable list or in the team’s minor league system.

A team can trade a player freely within the above condition if he is under contract, or been drafted within the last year. http://mlbplayers.mlb.com/pa/info/faq.jsp#arbitration

June 17, 2010: While Club Officials comment that trade talks have been quiet; the team would like an upgrade offensively and defensively at the Short Stop position. They also seem to be taking a wait and see approach to improvements to teh starting pitching rotation. The next few starts by second year pitcher Rick Porcello will likely decide what the team does at the trade deadline. http://www.mlbtraderumors.com/2010/06/odds-ends-piniella.html

June 1, 2010- traded SP Dontrelle Willis to the Arizona Diamondbacks for RHP Billy Buckner. The Tigers will pick up a substanial portion of Willis' 12 million dollar 2010 salary.

March 30, 2010- traded LHP Nate Robertson and cash to the Florida Marlins for prospect pitcher Jay Vosshttp://mlb.mlb.com/news/article.jsp?ymd=20100330&content_id=8997316&vkey=news_mlb&fext=.jsp&c_id=mlb

December 9th, 2009- Traded CF Curtis Granderson to the New York Yankees, and SP Edwin Jackson to the Arizona Diamondbacks for LHP Phil Coke, and CF Austin Jackson from the Yankees, and Max Scherzer and Daniel Schlereth from the Diamondbacks. http://www.nydailynews.com/sports/baseball/yankees/2009/12/09/2009-12-09_granderson_official.html

We start with the most infamous trade in Detroit Tigers history, and some say what led to the curse of John Smoltz

• August 12th, 1987-Traded minor leaguer John Smoltz to the Atlanta Braves for SP Doyle Alexander http://www.baseball-reference.com/players/s/smoltjo01.shtml

• December 4th, 2007- traded Pitcher Andrew Miller, OF Cameron Maybin, RHP Dallas Trahern, RHP Burke Badenhop, RHP Eulogio De la Cruz, and catcher Mike Rabelo to the Florida Marlins for 1B Miguel Cabrera and SP Dontrelle Willis Detroit News article

• November 10th 2006- traded RHP Anthony Claggett, RHP Huberto Sanchez and Minor League Kevin Whelan to the New York Yankees for OF Gary Sheffield http://www.baseball-reference.com/players/s/sheffga01.shtml

• June 8th, 2005-Traded IF Ramon Martinez and RHP Ugueth Urbina to the Philadelphia Phillies for 2B Placido Polanco http://www.baseball-reference.com/players/p/polanpl01.shtml

• November 2nd, 1999- traded 2B Frank Catalanotto, SP Justin Thompson, RP Francisco Cordero, C Bill Hasselman and OF Gabe Kapler to the Texas Rangers for OF Juan Gonzales, P Danny Patterson and C Greg Zaun http://www.baseball-reference.com/players/g/gonzaju03.shtml

• March 23rd, 1984- traded RF Glen Wilson and utility man John Wockenfuss to the Philadelphia Phillies for RP Willie Hernandez and IF Dave Bergman http://www.examiner.com/x-36296-Detroit-Sports-History-Examiner~y2010m3d24-Tigers-trade-for-Willie-Hernandez-complete-World-Series-roster

• August 12th, 1960- traded 3B Steve Demeter to the Cleveland Indians for 1B Norm Cash

http://teams.baseballevolution.com/detroit.html