AL Notes: Mariners, White Sox, Astros, Blue Jays

Here are a few trade notes from around the American League:

• As we approach the trade deadline with the Mariners looking more like sellers than buyers, Larry Stone of the Seattle Times took a look back at GM Jack Zduriencik's recent history at the deadline. Beginning with an ill-fated swap of a young Michael Morse for Ryan Langerhans and featuring the retrospectively painful Doug Fister deal, the net return to Seattle has not been terribly productive.
• This year, the Mariners could be in a position to deal some relievers. Last night, we took a look at FOX Sports' Ken Rosenthal's breakdown of potentially available NL relievers. Tonight, let's look at the AL crop. From the M's, Rosenthal says that veteran lefty Oliver Perez is the most likely to be dealt, with Charlie Furbush and Tom Wilhelmsen also prime candidates. The latter two, however, will likely command a high price given that Furbush may just be reaching arbitration after this season as a Super Two, while Wilhelmsen will not reach arbitration until after the 2014 campaign.
• Rosenthal also pegs the White Sox and Astros as sellers with attractive bullpen pieces. Chicago could swing a trade for stud reliever Jesse Crain if he can return in time to prove his health; otherwise, both Matt Thornton and Matt Lindstrom could hold some appeal. (Both of the latter two pitchers come with club options for 2014.) For Houston, meanwhile, the prime trade chip among its relief corps is unquestionably closer Jose Veras, who is cheap, strikes out a lot of hitters, and has been solid in late-inning work this year.
• One other team that should look to the future, according to FOX Sports' Jon Paul Morosi, is the Blue Jays. With the club again fading after its recent resurgence, Morosi says Toronto GM Alex Anthopoulos faces a "virtually impossible" task to right the ship before the trade deadline. Rather than selling out for this season, says Morosi, the Jays should look to shore up the team's rotation to make a run in 2014 and 2015.
• Sticking with the Jays, Morosi says that Josh Johnson — occasionally noted as a potential trade candidate earlier in the year — has been "perhaps the team's greatest disappointment this year." Johnson currently carries a 4.89 ERA in 53 1/3 innings; his walk rate is below his career average at 3.4 BB/9, though he is striking batters out at a strong 9.1 K/9 clip. At this point, Morosi suggests, Toronto may be best served by shipping Johnson back to the National League rather than looking to try and bring him back next year.