Baseball Chapel is a Christian ministry to baseball players that provides chapel leaders to all 210 major league and minor league baseball teams and estimates 3,000 players participate. The site maintains a list of active and retired players who endorse it. It’s based in Springfield, Pa., and Vince Nauss is president.

Michael L. Butterworth is director of the School of Communication Studies at Ohio University in Athens, Ohio. He is the author of Baseball and Rhetorics of Purity: The National Pastime and American Identity During the War on Terror. He has studied Major League Baseball’s “Faith Nights” and written about them.

Mary K. Mohler is the wife of Albert  Mohler, president of Southern Baptist Theological Seminary in Louisville, Ky. She is director of the school’s Seminary Wives Institute.

Thomas White is president of Cedarville University, a Christian school in Cedarville, Ohio.

Kathleen Nielson is a writer and speaker and is director of women’s initiatives for the Gospel Coalition, a ministry that supports gospel-based churches. She has written an essay in support of the complementarian viewpoint. Contact via her website.

Mark Dever is the senior pastor at Capitol Hill Baptist Church in Washington, D.C. He is the lead writer at 9Marks, a complementarian ministry.

Kathleen Sprows Cummings is a professor of American studies at the University of Notre Dame. She is an expert on the history of women and American religion and the study of U.S. Catholicism. She is the author of New Women of the Old Faith: Gender and American Catholicism in the Progressive Era.

Rachel Held Evans is a popular blogger and the author of A Year of Biblical Womanhood, in which she explored the meaning of “biblical womanhood” as it is understood by many complementarian and egalitarian Christians. She lives in Dayton, Tenn. Contact via her publicist.

Mary Kassian is a professor of women’s studies at Southern Baptist Theological Seminary in Louisville, Ky. She has written to support and explain the complementarian view of women in the church.