In the men's final, Team Bruce Mouat of Scotland won their second consecutive slam in the bubble, defeating Team Brad Gushue of St. John's 6–5. Team Mouat won the 2021 Champions Cup just six days prior to their win at the Players' Championship.
The top 12 ranked men's and women's teams on the World Curling Federation's world team rankings qualified for the event.[3] In the event that a team declines their invitation, the next-ranked team on the world team ranking is invited until the field is complete.
^After originally announcing that Laura Walker would spare as third for Team Homan as Rachel Homan was expecting her second child,[28] Homan returned to the team in time for the event, shifting Walker to alternate.
^Devin Heroux (December 8, 2020). "Curlers will face harsh penalties for leaving Calgary bubble". CBC Sports. Retrieved February 13, 2021.
^Jesse Campigotto (December 2, 2020). "What we know and don't know about the curling bubble". CBC Sports. Retrieved February 13, 2021.
^"Teams confirmed for Champions Cup, Players' Championship". Grand Slam of Curling. 12 February 2021. Retrieved February 13, 2021.
^"World Curling Federation: Men's World Team Ranking". CurlingZone. Retrieved February 13, 2021.
^"World Curling Federation: Women's World Team Ranking". CurlingZone. Retrieved February 13, 2021.
^"Men's Teams". Grand Slam of Curling. Retrieved March 20, 2021.
^Jonathan Brazeau (April 6, 2021). "Team Bottcher". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 27, 2021). "Team de Cruz". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 23, 2021). "Team Dunstone". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 29, 2021). "Team Edin". Grand Slam of Curling. Retrieved April 14, 2021.
^@TeamJohnEpping (March 27, 2021). "Ryan Fry will be sitting out the remainder of the season due to family reasons. We will miss Ryan in the bubble and wish him all the best during this difficult time. We are fortunate to have Colton Lott fill in at the third position for the two upcoming @grandslamcurl events" (Tweet) – via Twitter.
^Jonathan Brazeau (April 10, 2021). "Team Epping". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 21, 2021). "Team Gunnlaugson". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (April 8, 2021). "Team Gushue". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (April 13, 2021). "Team Jacobs". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 25, 2021). "Team Koe". Grand Slam of Curling. Retrieved April 14, 2021.
^"Tyler Tardi to fill in on Team McEwen for 2 GSOC events". Grand Slam of Curling. 25 March 2021. Retrieved March 25, 2021.
^Jonathan Brazeau (March 31, 2021). "Team McEwen". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (April 4, 2021). "Team Mouat". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (April 2, 2021). "Team Schwaller". Grand Slam of Curling. Retrieved April 14, 2021.
^ ab"Draw Schedule". Grand Slam of Curling. Retrieved April 7, 2021.
^"Men's Teams". Grand Slam of Curling. Retrieved March 20, 2021.
^Jonathan Brazeau (April 11, 2021). "Team Einarson". Grand Slam of Curling. Retrieved April 14, 2021.
^"Fleury to skip in Champions Cup, Carey to sub at Players' Championship". Grand Slam of Curling. Retrieved March 17, 2021.
^Jonathan Brazeau (April 9, 2021). "Team Fleury". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (April 7, 2021). "Team Fujisawa". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (April 14, 2021). "Team Hasselborg". Grand Slam of Curling. Retrieved April 14, 2021.
^"Laura Walker to sub for Rachel Homan in 2 GSOC events". Grand Slam of Curling. 17 March 2021. Retrieved March 17, 2021.
^Jonathan Brazeau (March 30, 2021). "Team Homan". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (April 5, 2021). "Team Jones". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 24, 2021). "Team Kim". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 22, 2021). "Team Kovaleva". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 28, 2021). "Team Muirhead". Grand Slam of Curling. Retrieved April 14, 2021.
^Jonathan Brazeau (March 26, 2021). "Team Peterson". Grand Slam of Curling. Retrieved April 14, 2021.
^ abJonathan Brazeau (April 3, 2021). "Team Stern". Grand Slam of Curling. Retrieved April 14, 2021.