By C. Trent Rosecrans
Follow all games live with CBSSports.com's GameTracker.
Home, sweet home: San Francisco returns to AT&T Park after a 4-6 road trip, but find themselves treading water against a struggling Arizona squad that has lost six games in a row. After losing their last four series, the Giants open a 12-game home stand with San Diego for two games before Houston and Chicago come to town, setting up a big three-game set with division-leading Arizona. The Giants play 21 of their final 34 games at home, where they have the fourth-best winning percentage (.583) among National League teams. San Diego is 11 games under .500, but has won 12 of its last 18 games. The two-game series against San Diego is the start of a run of interdivisional games for the Giants, who play NL West teams 27 times in their final 34 and are done with non-NL West teams after this homestand. Padres at Giants, 10:15 p.m. ET
Hanging on: Two second place teams, the White Sox and Angels, start a quick two-game series at Angel Stadium. The series won't make or break either team, but both hope to keep pace in their divisional races. The White Sox are tied for second with Indians, 5 1/2 games behind the Tigers in the AL Central, while the Angels are 4 1/2 game behind the Rangers in the AL West. Both pitchers -- Chicago's Mark Buehrle and Los Angeles' Ervin Santana -- had winning streaks snapped in their last outting. Buehrle hadn't lost since June 16 and had a snap of 18 starts of allowing three runs or fewer by giving up four runs in a loss to Cleveland. Santana allowed four runs (three earned) in a loss to the Rangers last Wednesday, pitching into the eighth inning. Still, Santana has gone 6-3 with a 1.87 ERA over his last 12 starts, while Buehrle is 5-2 with a 2.37 ERA over his last 12 starts. White Sox at Angels, 10:05 p.m. ET
Youth movement: In his last start, Braves left-hander Mike Minor didn't give up a run in six innings of work, striking out nine batters and walking one (intentionally), allowing just four hits. Since entering the rotation in the place of Tommy Hanson, Minor's gone 2-0 with a 3.63 ERA in three starts, showing why the Braves think so highly of the 23-year-old former first-round pick. Cubs right-hander Casey Coleman has been less successful in replacing Carlos Zambrano in the Chicago rotation. In his first start in place of Zambrano, Coleman allowed 10 hits and four runs in 3 2/3 innings in a loss to Houston. He's 2-5 overall with a 7.43 ERA, but his ERA is lowered a bit to 7.05 as a starter. Braves at Cubs, 8:05 p.m ETFor more baseball news, rumors and analysis, follow @cbssportsmlb on Twitter or subscribe to the RSS feed.