By C. Trent Rosecrans
Central showdown: Detroit is tied with Cleveland for the lead in the American League Central with the White Sox and Twins sitting five and six games back, respectively. While Chicago and Minnesota have had their struggles so far this season, they are by no means out of the race in what has been a mediocre division. Ozzie Guillen's squad plays Detroit six times in its next nine games, giving them a chance to either make up ground or get buried in the standings. A tough road back isn't any easier with Justin Verlander getting the start for the Tigers. White Sox at Tigers, 7:05 p.m. ET (Follow live)
Proving ground: Andrew Miller has pitched well in his first four starts for the Red Sox, accumulating a 3-0 record and a 3.57 ERA while Boston has won all four games he's started. However, his four starts have come against San Diego, Pittsburgh, Houston and Baltimore -- of those, only the Pirates have a winning record and only the Orioles have a team OPS better than the league average. The Rays aren't exactly breaking out murderer's row out there, but they're at least in the hunt in the American League East. Red Sox at Rays, 7:10 p.m. ET (Follow live)
Make or break?: The Reds start the second half four games back of lead in the National League Central and face off against the division-leading Cardinals at home, followed by three games in Pittsburgh before coming back home for three against the Braves, four against the Mets and three against the Giants. This stretch could put the Reds back at the top of the standings or burry them behind the Cardinals, Brewers and Pirates in the division. Cincinnati has the man it wants on the mound, right-hander Johnny Cueto who enters the game 5-3 with a 1.96 ERA and allowed just one run in eight innings in a 1-0 loss to the Cardinals on July 4. That day he was facing Chris Carpenter, this time it's Jake Westbrook. Cardinals at Reds, 7:10 p.m. ET (Follow live)For more baseball news, rumors and analysis, follow @cbssportsmlb on Twitter or subscribe to the RSS feed.