The Saskatoon StarPhoenix first reported the fights, who’s spots on the card aren’t known at this moment in time.
Robertson (7-4-0) has won two of her last four bouts under the UFC banner, with those wins coming over Veronica Macedo and Sarah Frota. Santos (15-1-0) is winless thus far in UFC competition, having dropped a bout to Mara Romero Borella at UFC Fight Night Fortaleza.
Barriault (11-4-0) has gone winless thus far in his UFC journey, having dropped bouts to Andrew Sanchez, Krzysztof Jotko and Jun Yong Park. Piechota (11-3-1) has won two of five fights under the UFC banner, but the fighter hasn’t earned a victory in over two years.
UFC Fight Night Saskatoon takes place on Saturday, June 20 from a location to be announced in Saskatoon, Saskatchewan, Canada with no main event announced at this time. Fightful is providing live coverage of the event, which streams live on ESPN+.