On February 11, 2010 Troop was named the Chief Executive Officer of the organizing committee of the
2015 Pan American Games. Constant venue delays and secrecy surrounding the organization made Troop a target of critics. Additionally, Troop's compensation and bonus structure drew criticism. On December 13, 2013 the Board of TO2015 fired Troop. He was replaced by Saad Rafi, Ontario Deputy Health Minister. The Games' Chair
David Peterson stressed that criticism of Troop was not the cause of his dismissal, stating the Games are "in really great shape." Troop received a severance package worth $534,000. His firing ultimately had nothing to do with the expenses scandal that arose in 2013. Just before the start of the Games in July 2015, the
Hamilton Spectator described Troop as doing ‘all the heavy lifting’ in a ‘precise pivot’, changing two-thirds of the Bid dream plan to create the Games execution plan. Under his leadership, $53 million was saved on a $672 Million capital budget, and sponsorship exceeded the $102 million sponsorship goal by more than $50 million – in total over a $100 million improvement. John Furlong, CEO of the Vancouver Olympics said Troop 'worked his heart out and will always own a piece of these Games. He has his fingerprints all over this event'. On June 17, 2019 the books were closed on the outcomes of Toronto 2015 Pan Am Games. The Games were underbudget by $38 million, leaving a legacy endowment fund of $60 million and all new facilities functioning well. The majority of experts say that these were the finest games ever held. Hon. David Peterson, Chair of the 2015 Organizing Committee said, "I'm happy to report that the Games came in under budget by $38 million and have left a remarkable legacy for the people of Ontario.” “The Games went on without a hitch. They were warmly embraced by the people of Ontario, who, along with people from the United States, South America, Central America and the Caribbean, bought over 1.2 million tickets.” “I would like to thank the Founding Chairman, Roger Garland, and the Founding CEO, Ian Troop, who did excellent work.” ==Sovereign's Medal for Volunteers==