Rackets raised to receive Sabalenka's opening spell (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

NOISES (rackets, as in “stop making such a racket!”) reversed (raised = upwards in a down clue), containing (to receive) the opening letter of S [abalenka]. For the surface, Aryna Sabalenka is a tennis player from Belarus. Session = spell = a period of activity.