I am still none the wiser:
Short term usual means 2 to 3 medium 4 to 6 weeks, not sure how it equates in hamstring speak?
It's pretty good news.
You'd always take a strain over a tear and a medial hamstring is the 'better' hamstring injury to have. It's more related to the knee and hip motion as opposed to a failure of the muscle.
Sounds like a pretty standard 21-28 days, all going well.
Here is a quote from Dimma on Dion's hammy so as you say not so bad:
If that's accurate it's even better, doesn't even sound like a strain. A bit of tightness in the medial from someone with knee and ankle issues is par for the course, a few light days and a bit of strength work and away he goes.
Not to say he will play round one, but in a long term sense you'd be more worried about an ingrown toenail.