https://ratings.fide.com/tournament_report.phtml?event16=221867&t=

Manitobans generally didn’t fare so well -

Name Rating change
  Wolchock, Theo  -25.2
  Wiebe, Isaac  -24.8
  Ma, Derek  + 3.4
  Boron, Anthony  -15.6
  Green, Jim  -9.8
  Einarsson, Ken  -33.2
  Bince, Rolando  -22.6


Major factor  was underrated juniors and/or unrated players.

Source: Chess Manitoba