Bottom line is, when he had to be TAKEN OUT OF THE GAME last week, he should have been shut down for 2 weeks. Hamstring injuries are the type that can linger for a whole season if they do not properly heal.
He probably thinks Reyes will come back in 2 weeks and WONT get injured again.
I personally think we should sign Drew to a multi-year deal and dump Reyes and his contract this upcoming offseason. Reyes will be getting 20 million per year for 3 more years, and his injuries are likely to get worse as he gets older.