The story
In the era of pool champions like Willie Mosconi and Irving Crane, the standard dress code for professional pool saw players dressed in tuxedos when competing, but beginning in the 1970s, the dress code had relaxed in competition with contenders wearing sneakers, baseball caps, T-shirts, and blue jeans. Trudeau re-established a dress code for the IPT members and required all IPT members and competitors to adhere to it, to project a better image for pool. All male pool players were required to wear suits, long-sleeved shirts, and leather shoes.
In the events Trudeau refused to follow some of the rules normally required by pool's governing bodies, in particular the policy that all prize money be held in escrow. Despite this, both the Women's Professional Billiards Association and the U.S. Professional Pool Players Association allowed their players to join the IPT.
From Wikipedia’s article on International Pool Tour, shared under CC BY-SA 4.0.4