General managers use the first two months of the season to evaluate their teams, then try to improve the team through trades or calling up top prospects in the next two months. Then they try to tweak the team with waiver deals and September call-ups in the last two months.
Given this, teams are mainly concentrating on the draft and don’t focus full-time on trades until after the draft (June 5-7). However, GMs still are talking to each other and laying the foundation for deals. This includes letting other GMs know their interest in a particular player and at least offer a fair chance to trade for that player. Many GMs are also letting other teams know exactly who’s available and who’s untouchable.
Most of the big trades happen between the All-Star Game and the July 31 trade deadline as well as in August via waiver deals. Of course, that doesn’t mean there aren’t deals in May or June, and I like to think of these deals as "appetizer" trades, with the entrees coming closer to July 31. Often, these are minor deals, like when Chris Nelson was dealt from the Colorado Rockies to the New York Yankees last May. However, we sometimes get major deals in May.
For example, it was mid-May 1998 when the Dodgers traded Mike Piazza to the Marlins, who then traded him to the Mets a week later.
With 27 of the 30 teams within four games of the playoffs coming into the weekend, it is safe to assume there will be fewer teams "selling" than normal. More likely trades will be made between contenders that match up in roster depth and weaknesses.
Here are some possible "appetizer" trades I would like to see that would fill some important needs of these contending teams:
OK, this is not a traditional "appetizer" deal, and is more in line with those aforementioned Piazza deals. The Blue Jays lead the AL in home runs and are third in runs scored. They might have the best lineup in the AL East. However, for the Blue Jays to contend all season, they must make a trade for a starting pitcher.