Bregman's hamstring injury usually needs 4-to-6 weeks of recovery time, according to Astros GM Jeff Luhnow, Brian McTaggart of MLB.com reports.
Luhnow did say that recovery time can be pushed a bit, but even so, Bregman has only missed one week. With just under two weeks left in the regular season, expecting Bregman to make a return seems wildly optimistic. Perhaps he can make a postseason appearance if the Astros manage a deep run, but his fantasy season is most likely over.