When the season began, there were questions surrounding just how good the Houston Astros pitching was going to be this season after they lost Framber Valdez in free agency to the Detroit Tigers. General manager Dana Brown added Japanese star Tatsuya Imai in free agency and traded for veteran Mike Burrows from the Pittsburgh Pirates in a three-team trade. However, there was some news before the regular season began, with closer Josh Hader beginning the year on the injured list. That left manager Joe Espada looking to piece things together on the backend of the bullpen late in games. So far, the results have been good, but the numbers are concerning when it comes to the rest of MLB. Astros Lead MLB in One Category but the Numbers Should Concern Fans Bryan Abreu | Eric Canha-Imagn Images According to Kerry Miller of Bleacher Report , the Astros bullpen has the fewest blown saves. That's great, but the numbers are a little concerning. They have just one blown save, but that's only been in eight chances.…