It featured such greats as Willie Wells, Leon Day, Ray Dandridge and Satchel Paige, who pitched briefly for the Minot Mallards in 1950.
The league unsuccessfully sought to add a team based in Grand Forks, North Dakota.
[4] The league drafted a new constitution, decided that its teams would wear a patch including both the flags of Canada and the United States, and planned a parade with a marching band through downtown Winnipeg on its opening day.
[5] Dunn described the opening day plans by saying that, "the Mandak baseball league this year will be more colourful than a Scotman's kilt".
[6] Opening day was postponed due to the 1950 Red River flood inundating Osborne Stadium, and the schedule was changed for the Winnipeg teams begin on the road.