(Houston, TX)  --  Matt Olson and Elvis Andrus each went deep as the A's fell to the Astros 4-3 in Houston.  Olson hit his 21st home run of the year in the first.  Lefty Sean Manaea went six-and-two-thirds innings on the mound, allowing four runs and striking out six.  He took his sixth loss for Oakland.  The A's have dropped three straight and five of their last six.  They wrap up the series with Houston today.