ESPN Week 8 Power Ranking:
1. Houston Astros
Record: 34-20
Week 7 ranking: 3
The Astros' pitching has been impressive all season long and allowed just 126 runs through 50 games this season, the fewest in the live ball era (since 1920). Plenty has been said about the Astros' rotation, and with good reason, as they have the American League's top three starting pitchers in ERA. But don't forget about the bullpen, which also leads the AL in ERA (2.96) and WHIP (1.08). Houston relievers have held opponents to just a .274 OBP this season, best in the majors. -- Jacob Nitzberg, ESPN Stats and Information
1. Houston Astros
Record: 34-20
Week 7 ranking: 3
The Astros' pitching has been impressive all season long and allowed just 126 runs through 50 games this season, the fewest in the live ball era (since 1920). Plenty has been said about the Astros' rotation, and with good reason, as they have the American League's top three starting pitchers in ERA. But don't forget about the bullpen, which also leads the AL in ERA (2.96) and WHIP (1.08). Houston relievers have held opponents to just a .274 OBP this season, best in the majors. -- Jacob Nitzberg, ESPN Stats and Information