#2 - Angelique Kerber
The German star, appearing in her 5th WTA Finals, is chasing the elusive title and is probably best placed after Osaka to make the semifinals from the Red Group. Her best performances have always come in the Grand Slams, and quite surprisingly, she is yet to win a single WTA Premier tournament in her long career.
Moreover, she hasn't quite enjoyed the best post-Wimbledon season. Her inability to win 3 consecutive matches since Wimbledon may work against her. But, she has the experience, and even winning 2 matches out of the allotted 3 could be enough for her to make it to the knockouts.
A finalist in 2016, Kerber has now made the season-ending finale in 5 of the last 6 editions (including 2018). But, she's yet to make a proper mark at this tournament, although, she's capable enough to produce her best tennis when the situation calls for it. It wouldn't be a surprise if she does qualify from her group.
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