'Battle of the Sexes' match: predict the unpredictable

(Photo credit: Mike Frey-Imagn Images)

Aryna Sabelenka promises complete confidence. Nick Kyrgios offers uncertainty.

In that sense, it will be business as usual when Sabalenka faces Kyrgios in an updated 'Battle of the Sexes' match Sunday at Dubai.

Once warmups are complete, though, it will be anything goes.

'This event is really unpredictable,' Sabalenka, 27, said Saturday. 'I don't know what