VGFacts

In Mario Sports Superstars, Rosalina is voiced by both Kerri Kane and Laura Faye Smith, a first for a Mario game.

Laura Faye Smith does the voice acting for all sports, except for Golf:

Horse Racing:
https://m.youtube.com/watch?v=vIaca1Tb0Mo

Tennis (skip to 3:19):
https://m.youtube.com/watch?v=l3mkD00ptts

Baseball:
https://m.youtube.com/watch?v=UTA-dVx9HEU

Soccer (skip to 1:39):
https://m.youtube.com/watch?v=xRsAbMY2TNc


As the Golf sport is built off of Mario Golf: World Tour, Kerri Kane does the voice for Rosalina.

Golf (skip to 9:09):
https://m.youtube.com/watch?v=oC-hWyu8X20