Gauff and McNally—McCoco—reach another doubles final in Luxembourg

Five tournaments into her WTA career, and we can already tell 15-year-old Coco Gauff's future with certainty. When Gauff enters a tournament, she will either:

a) reach at least the third round in singles

or,

b) lose her singles opener, but reach the doubles final

At Wimbledon, the US Open and, most recently, Linz, Gauff won at least two main-draw singles matches. In the two tournaments she failed to do so—Washington D.C. and Luxembourg—she's still managed to get something out of the week, in doubles.

At the Citi Open, Gauff and 17-year-old compatriot Caty McNally defeated the third and fourth-seeded teams on their way to the title. And this week in Luxembourg, they've taken out the No. 4 seeds (Anna Blinkova, Gauff's singles conqueror, and Miyu Kato) and, on Friday, the No. 1 seeds (Kristyna Pliskova and Renata Voracova).

Oddly enough, McCoco's most difficult doubles win, by far, was in their opener against the unseeded team of Misaki Doi and Makato Ninomiya. In that match, Gauff and McNally dropped a second-set tiebreaker before prevailing 10-5 in the truncated third set.

Against the top seeds, it was a straightforward, 6-2, 6-4 result:

The teen team isn't done with seeds yet, though, with No. 2 seeds Kaitlyn Christian and Alexa Gaurachi waiting in Saturday's final.