Guillen to stay in Motown

The Tigers signed SS Carlos Guillen to a four-year extension today, locking up the 31-year-old through 2011. Guillen has had some trouble with injuries, but produces offensive numbers to rival any SS when healthy. In 2006, his OPS was .920 and in 2004 it was .921 -- both times the best in the bigs. Guillen would have been a free agent after this season.