By C. Trent Rosecrans
Follow all games live with CBSSports.com's GameTracker.
Jimenez brings the heat: Ubaldo Jimenez makes his Cleveland debut against the Rangers, a team he's never faced. Jimenez was 6-9 with a 4.46 ERA for the Rockies this year, but was much better on the road than at (his former) home -- going 3-4 with a 3.38 ERA away from Coors Field and a 3-5 mark with a 5.55 ERA in Colorado. Jimenez will not only have to face the Rangers and Derek Holland, but also the heat. According to Weather.com, the forecast is for a game time temperature of 106 degrees, which would make it the hottest game in Rangers Ballpark history -- a place with quite the history of steamy weather. Texas had two 105-degree games last month. Indians at Rangers, 8:05 p.m. ET
East showdown: Yes, it's terribly unoriginal to put yet another Yankees-Red Sox game in the preview. Yes, the rest of the country is sick of having the two teams rammed down our throats. And yes, they've already played nine games and have nine more against each other. But the reason this rivalry gets talked about is that it's worth talking about. Entering this three-game set at Fenway Park, the two teams are tied for the best record in the American League at 68-42 and atop the American League East standings. Boston is 8-1 so far this season against their rivals, beating Friday's starter Bartolo Colon twice already. However, in those two starts, Colon has allowed just seven hits and three earned runs over 10 1/3 innings. Lefty Jon Lester is on the hill for Boston. He's allowed 13 hits and seven earned runs in two starts against the Yankees this season, but picked up victories in both starts. Yankees at Red Sox, 7:10 p.m. ET
Sinking ship?: Piitsburgh's quickly gone from the belle of the ball to, well, the Pirates. Looking to break their streak of 18 consecutive losing seasons, the Pirates have lost their last seven games and are now two games under .500 at 54-56. Pittsburgh will see a familiar foe on the mound in Padres right-hander Aaron Harang, a former Red who has started 23 career games against the Pirates, going 13-6 with a 4.19 ERA. Harang has beaten the Pirates and Astros more than any other teams in baseball. He faces off against Pittsburgh's best starter, Jeff Karstens. Karstens is 8-5 with a 2.49 ERA and has allow two or fewer earned runs in 13 of his last 16 starts. Padres at Pirates, 7:05 p.m. ETFor more baseball news, rumors and analysis, follow @cbssportsmlb on Twitter or subscribe to the RSS feed.