Commissioner Bud Selig's office approved last week's mega-deal on Monday, which sees shortstop Jose Reyes, pitchers Josh Johnson and Mark Buehrle, utility player Emilio Bonifacio and catcher John Buck off to Toronto in for shortstop Yunel Escobar, pitchers Henderson Alvarez, Justin Nicolino and Anthony DeSclafani, infielder Adeiny Hechavarria, catcher Jeff Mathis, and outfielder Jake Marisnick.
"After a thorough examination of this information, it is my conclusion that this transaction, involving established Major Leaguers and highly regarded young players and prospects, represents the exercise of plausible baseball judgment on the part of both Clubs, does not violate any express rule of Major League Baseball and does not otherwise warrant the exercise of any of my powers to prevent its completion.
Source: http://www.tsn.ca/mlb/story/?id=409853
Bud Selig Statement: http://www.atmlb.com/TU7IqM