The Colorado Rockies are beginning to have the look of a legitimate World Series contender, as they boast the second-best record in the National League and seem to have the defending World Series champs’ number. The Rockies look to extend their winning streak to six games and continue their strong performance against the Chicago Cubs when the teams continue a four-game series Friday at Wrigley Field.

The Miami Marlins are riding a hot streak with wins in nine of their last 12 games thanks to a pitching staff that allowed three or fewer runs eight times in that span. The Marlins will try to follow up a convincing win and clinch at least a tie of the four-game series when they visit the Pittsburgh Pirates on Friday.

Tanner Roark is bidding to become the third seven-game winner for the Washington Nationals when they host the Texas Rangers on Friday night in the opener of a three-game interleague series. The Nationals kicked off a seven-game homestand with a 6-1 win over Baltimore in a makeup game Thursday to improve to 8-2 in their last 10.

The Cleveland Indians look to put a disastrous road trip in their rear-view mirror as they speed toward the opener of a three-game series against the visiting Chicago White Sox on Friday. Cleveland erupted for 33 runs to win four of its last five contests at Progressive Field before getting outscored 35-17 during its 1-4 trek through Kansas City and Colorado.

The Boston Red Sox just completed a 5-5 road trip and watched their offense disappear when a chance to take over first place in the American League East was on the line at the New York Yankees. The Red Sox will try to find their bats when they return home to host the Detroit Tigers in the opener of a three-game series on Friday.