With the unofficial second half of the season underway and the stretch run around the corner, our Hitter Power Rankings have seen quite a shakeup since our last edition. While the slugger at the top retains his perch,

Their lead in the NL Central grew to 6 ½ games on June 17. They haven't even been playing poorly lately -- they are still on pace to win 97 games -- but the lead has dwindled. In fact, the Cubs and Brewers are tied for first place.

The Brewers have now won 10 straight games, including all six of their matchups against the Dodgers in that span, and are suddenly tied with the division-rival Cubs for the best record in the National League.

In their last 10 games, the Tampa Bay Rays have gone 4-6 and watched the Toronto Blue Jays overtake the New York Yankees atop the American League East Division. While the Rays would love to be in the Blue Jays' position,

The Detroit Tigers limped into the All-Star break, losing four straight games for the first time this season. Still, they were well-represented at the All-Star Game and rightfully so, as they brought the best record in baseball into the break.