9:12:pm: The Astros also placed Clint Barmes on waivers, reports Zachary Levine of The Houston Chronicle. Houston was telling teams that their shortstop was unavailable before the trade deadline, and Barmes has indicated a willingness to stay with the club beyond this season.
2:01pm: The Astros have placed Wandy Rodriguez and Brett Myers on waivers, according to Jon Heyman of SI.com (on Twitter). The move starts the timetable for potential trades involving Rodriguez and Myers.
Rival teams now have two business days to place a claim on the starting pitchers, both of whom have signed extensions in the past year or so. If no one claims them, the Astros will be free to trade with all clubs. If a team makes a claim, the Astros will have the choice of handing the claimed player and his salary over, pulling him back off of waivers or working out a trade with the claiming team within two business days. By placing the starters on waivers now, the Astros are giving teams an extra two days - the weekend - to contemplate making a claim.
Though it's not usually noteworthy for players to hit waivers in August, Rodriguez and Myers have both been considered trade candidates this summer and it won't be surprising if they are dealt. Myers has $14MM guaranteed on his contract after 2011 and Rodriguez has $23MM guaranteed plus a $13MM option that becomes a player option after a trade.