Rapid Reaction: Cubs 6, White Sox 3

A quick look at the Chicago Cubs' 6-3 victory over the Chicago White Sox in the Crosstown Classic opener on Monday at U.S. Cellular Field.

The good: After a rocky first inning, right-hander Carlos Zambrano threw seven shutout innings, winning his sixth game of the season. Carlos Pena's three-run home run in the sixth gave the Cubs their first lead of the night. Starlin Castro had three RBIs, including his second home run of the season, as part of an early Cubs’ resurgence. It was Castro’s first homer since April 16.

The bad: Zambrano put the team in an early hole, giving up three runs in the first, including Paul Konerko's 20th home run of the season. It was Konerko’s fifth homer off Zambrano in 30 at-bats.

Outside the box: Marlon Byrd will start his rehab on June 27 in Iowa. With no setbacks, he’ll return to the team on the Fourth of July in Washington, D.C.

What’s next: Cubs right-hander Matt Garza (3-6, 4.14 ERA) faces White Sox lefty Mark Buehrle (6-5, 3.75 ERA) on Tuesday at 7:10 CT.