For those wondering why Brandon Lyon was left in last night's game to throw 60 pitches, instead of bringing in a presumably fresher Nate Robertson to pitch that 13th inning, Nate was, in fact, injured.
In The Detroit Tigers Weblog's game thread, a commenter posted that Robertson wasn't used because he'd hurt himself and that Lucas French was going to be called up from Triple-A Toledo to replace him. (This was also posted in the MotownSports forum.)
There was no immediate confirmation of that following the game, and nothing was reported early this morning, but the Tigers just made it official: Robertson goes on the disabled list with a muscle strain in his lower back (according to the Tigers' official game notes), and French - who was scheduled to start today for the Mud Hens - has been recalled from Toledo. What's also interesting to note is that Nate is being placed on the DL retroactive to May 6. So he's apparently been nursing this for a while.
French is a 6' 4" left-handed starter who's appeared in six games with the Mud Hens this season. He's compiled a 2-2 record and 2.91 ERA, with 29 strikeouts (and nine walks) in 34 innings.
[Updated at 9:45 a.m. EST]