Karen Khachanov about skill which he would like to adopt at Federer: "I should work over exits to grid"

The vice-champion of the Olympic Games-2022 Karen Khachanov in interview of newspaper "Sport-express" answered some tennis questions in a format a blitz. — Favourite tennis souvenir? Probably, the cut-off grid? — From all "Big helmets" I give towels. I leave to myself or I give to family members, trainers. — What blow you consider the firm? — Blow with left on the line. — Twisted or flat giving? — Flat. — What skill and from whom you would like to take away? — Probably, to improve the blow since summer. As Federer, Stephane Bengt Edberg, Petros Sampras played in due time. I should work over exits to grid and to add variabilities —...