Lynn (knee) will begin a rehab assignment with Triple-A Memphis on Sunday, Lynn Worthy of the St. Louis Post-Dispatch reports.
Lynn threw approximately 75 pitches in a live practice session Monday and is slated for 80-to-85 pitches in his first rehab start. He should be stretched out enough for a return to the big leagues after that, though it's not a guarantee that he'll rejoin the St. Louis rotation at that time. Lynn has been out since late July with right knee inflammation.