Answer
Genie Bouchard was coached by Nick Stubbs throughout 2020. Stubbs is a former professional tennis player who has coached several top players, including Milos Raonic and Eugenie Bouchard. He is known for his technical expertise and his ability to help players improve their game. Under Stubbs' guidance, Bouchard made significant progress in 2020, reaching the semifinals of the Prague Open and the quarterfinals of the US Open.