 He currently serves as Chairman of the Board of Directors of Georgetown University, having succeeded former NFL commissioner Paul Tagliabue in July, 2015.Bill Doyle was appointed President and Chief Executive Officer of PotashCorp on July 1, 1999, after 12 years as a member of the PotashCorp senior management team.He has served on PotashCorp's Board of Directors since the company was first listed on the Toronto and New York stock exchanges in 1989.