The lights came on at Wrigley Field to the sound of cheering and singing as the 74-year-old ballpark prepared to say goodbye to its daytime-only baseball tradition.

In a test run for players and fans, the Chicago Cubs held their first batting practice under the lights Monday night. The venerable ballpark began to glow at dusk as a crowd of about 3,000 - each of whom paid $100 a ticket - sang the national anthem.