The Detroit Tigers are a very different team than the one that swept the Houston Astros back in mid-April. That series was a brief sign of life in an otherwise disastrous opening month of the season. However, the Tigers have really turned it around since then, going 24-30 since the start of May, and 14-14 since May 24th.
The roster has gone through a lot of changes since we last saw the Houstonians. The development of Gregory Soto, Jose Cisnero, and Michael Fulmer into a quality backend of the bullpen has made a major difference.