Danny Knobler tweeted out that the Astros joined the Red Sox and Tigers in watching Nationals pitcher John Lannan today.
Lannan, a 27-year old 6'4" LHP, was 10-13 last year with a 3.70 ERA/1.46 WHIP for Washington, and has posted sub-4.00 ERA in three of his last four seasons (but has outperformed his FIP in every year but 2010). He's under contract for $5m in 2012.