Hasn't lost in singles since September, showcasing a remarkable record of two losses out of 34 sets and 13 set scores of 6-1 or 6-0.
Teenage sensation enters with strong form, defending her title in Auckland after the triumph at the US Open.
Displays an evolved game, securing victories even when not at her best, and her forehand has become a formidable weapon.
The key for the American is overcoming the quarter-final hurdle after six grand slam exits at this stage.
Despite setbacks, she maintains confidence with victories against all current top 10 players except Marketa Vondrousova, showcasing promise in reaching later stages.
Best American Hope: Emma Navarro Emerging as a promising candidate for the US, with a significant boost from winning the Hobart International.