There were several notable changes in this week's Fastball On SI MLB power rankings poll. Check out the full list below.

DETROIT -- The Detroit Tigers claimed veteran right-handed reliever Carlos Hernandez off waivers from the Philadelphia ...

The Houston Astros are a season-best 11 games over .500 after stringing together five straight victories but an unexpected rotation shakeup on Monday presents a new challenge.

The Texas Rangers' offense, or lack thereof, has been one of the most confusing storylines in all of baseball this season. The same core of guys that won the Wo ...

Pena and the Astros open a series with the Athletics, who are trying to pull themselves out of an awful slump where they went ...