Mattingly has his rotation set for the final week of the regular season: Monday, Dan Haren; Tuesday, Zack Greinke; Wednesday, Clayton Kershaw; Thursday, off; Friday, Roberto Hernandez; Saturday, Haren; Sunday, Greinke.
"The only change," said Mattingly, "is if Hyun-Jin is able to do anything."
Assuming the Dodgers are still playing for the division title or home-field advantage in next weekend's series against Colorado, the only logical spot to use Ryu would be in Hernandez's spot on Friday, and it's doubtful Ryu will be ready that quickly.
An earlier clinching, however, would allow Mattingly to set up the rotation for the postseason and possibly use Ryu next Saturday or Sunday. Before pitching in a game, however, Ryu would need to throw a bullpen session and show the club that the inflammation doesn't return.