Christina Kahrl is one of ESPN.com's national baseball writers and editors, having joined ESPN in 2011. She is also one of the co-founders of Baseball Prospectus, and is the former executive editor of the think tank's website, BaseballProspectus.com, as well as the former managing editor for their annual publication. She is a member of the Baseball Writers Association of America, and was one of the first four internet-based writers to voted into the organization in 2008.

Away from the diamond, Kahrl is an activist on civil rights issues for the transgender community from her hometown of Chicago, having served as a member of the national board of GLAAD, with Equality Illinois during the achievement of marriage equality, and with Chicago House and its Trans Life Center. She has also worked extensively on issues related to policing and the trans community, having negotiated the Chicago Police Department's new general order for the treatment of transgender individuals, as well as volunteering with the Department of Justice to train to local police departments on issues associated with the trans community.

Since becoming the first sportswriter to come out as transgender in 2002, Kahrl has also been active in the area of LGBT inclusion in sports, working with the Nike-sponsored LGBT Sports Coalition, the Sports Equality Foundation, and the You Can Play Project. She was elected to the inaugural class of the Gay and Lesbian Sports Hall of Fame in 2013. Her current area of focus in sports activism and advocacy is in achieving a national standard for trans youth inclusion in school sports at the K-12 level across all 50 states.

Dr. Robert Garofalo, MD, MPH, is board-certified in pediatrics and adolescent medicine. Dr. Garofalo also directs Lurie Children’s Adolescent/Young Adult HIV Program, the Division of Adolescent Medicine, and the Center for Gender, Sexuality and HIV Prevention through the Lurie Children's Research Center. He is Associate Professor of Pediatrics and Preventive Medicine at Northwestern University’s Feinberg School of Medicine. He is a national expert on lesbian, gay, bisexual and transgender (LGBT) health issues, as well as adolescent sexuality and HIV infection. Dr. Garofalo provides direct clinical care as a member of this team.