20 starting pitchers who could be traded

If the Phillies falter by July, Cliff Lee could be the No. 1 pitcher on the trade market. Sarah Glenn/Getty Images

With MLB's trade deadline just six weeks away, there are presently 22 teams within eight games of making the playoffs. This means just eight teams can be considered "sellers" at this juncture. Many of the contenders are looking for elite starting pitching, but the reality is probably only one or two will be traded and contending teams will have to settle for middle- or back-end rotation types.

I'm hearing teams that already have been in trade talks for potential available starters include the San Francisco Giants, Colorado Rockies, Washington Nationals, Texas Rangers, Cleveland Indians and Baltimore Orioles. Here is a list of the top 20 starting pitchers who could be traded between now and the July 31 trade deadline:

No. 1 starters

Cliff Lee | LHP | Age: 34

Contract status: $25M per year through '15 with vesting option of $27.5M