"With their once-lengthy list of starting pitching targets shrinking, the Tigers are making another longshot run at top choice Ubaldo Jimenez.

The Tigers were considered to be basically out of the Ubaldo derby, because the Rockies valued other teams' prospects more highly.

But the Tigers are increasingly desperate to improve their rotation, fueling one more run at Jimenez, sources confirmed to CBSSports.com Friday morning.

It still seems unlikely that the Tigers could actually get Jimenez. According to one source with knowledge of the talks, a Tiger package would need to start with Jacob Turner and/or Rick Porcello. Turner is the Tigers' top prospect, and has been declared near-untouchable in trade talks. Porcello is their 22-year-old third starter, and while Jimenez would be an upgrade, the Tigers would still have a hole in their rotation.

Tigers general manager Dave Dombrowski has been willing to move "untouchable" prospects in the past, if he likes the return enough. Both Cameron Maybin and Andrew Miller were considered untouchable when Dombrowski put them together in a package for Miguel Cabrera at the winter meetings in 2007."