Lance Armstrong, during the interview with Oprah Winfrey that was recorded Monday and began airing Thursday night.

*Part 1 of Oprah Winfrey’s interview with Lance Armstrong drew a total of 4.3 million viewers in its back to back airings, marking the highest rated weekday telecast in OWN history across all key demos, the network announced.

Additionally, the telecast ranked #1 in OWN history across all key male demos, and the 9 p.m. premiere was its second highest network telecast to date garnering 3.2 million total viewers, posting strong triple-digit growth across the key demos versus year ago numbers. The second airing at 10:30 p.m. earned an additional 1.1 million viewers.

OWN’s top telecast remains the “Oprah’s Next Chapter” featuring Whitney Houston’s family, drawing 3.5 million viewers on March 11, 2012.

The conversation continues tonight as “Oprah and Lance Armstrong: The Worldwide Exclusive” Part 2 airs from 9-10 p.m. ET/PT and will simultaneously stream live worldwide on Oprah.com.

Watch a preview below.