Wozniacki won their only previous meeting which was at the Australian Open in January 2015. She won in straight sets. She was still number 1 in the world then. She is now ranked 74th with Sevastova at 48.
Wozniacki has struggled physically this season. Since her semi final in Auckland in her 1st tournament of the year she has rarely strung 2 wins together. For this tournament her preparation seems to have been spot on and she beat Keys in straight sets in the last round and also beat Kuznetsova in 2 sets.
Sevastova has not dropped a set in her 4 matches. Both Muguruza and Konta were expected to beat her but were both despatched in straight sets.
I think this could be very close. There is value on Sevastova at the start and I think we see 3 sets.
Lay Wozniacki below 1.20