Every fashion event has its bottom dwellers, and some of the pros at this year's U.S. Open end up on both the fashion aces and faults lists due to their mix of day- and night-match looks. Without further ado, here are this year's sartorial shortcomings. (You can find the relative fashion aces here.)

H&M has been hot and cold with its treatment of Tomas Berdych, and the latest is a multicolored 1980s fever dream. Not in a good way.

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Fabio Fognini's adidas style looks like something out of a Psycho shower scene or a Scream flick. (Rest peacefully, Wes Craven.) Drip, drip, splat. That's also the sound of his most recent foe, the defeated Rafael Nadal, sweating.

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Caroline Wozniacki's adidas dress just couldn't decide what it wanted to be. In the end, it looks like autumn, and the Spin is not ready for that just yet, especially not in this weary heat.

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Andy Murray joined the Under Armour brigade, but that news has been met by one yawner after another. His day and night attire at this final major of the season has been no different. Wake up, UA.

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Rafael Nadal's Nike look for his daytime rendezvous was a prime example of too much of a good thing. As his loss to Fognini showed, it's truly not easy being green.

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It's not often that we find Roger Federer among the fashion "out" calls, but here he is in his night-session blunder. A notably Nadal-loving friend texted me, "It looks like he raided Barbie's closet."

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Suffice it to say, Fed looks soft. That can't possibly be what he's going for on these evenings in Queens, even if he does cry alongside his daughters at Broadway shows:

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Bethanie Mattek-Sands put on a show against Serena Williams, ultimately falling in three entertaining sets. The Spin misses her outfits of yore, though, which at least seemed to hint at cohesion at times. Even so, Team BMS.

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Adidas adorns Simona Halep with a faded-tones look akin to that Rafa dons for Nike. But it still doesn't work.

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Milos Raonic sports New Balance, but looks a lot more undecided about his clashy color choices than he does about how much time he's going to spend on his hair.

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Sloane Stephens' Under Armour look is brought to you by the acronym WNTWWAFW: What Not to Wear Whilst Away From Wimbledon. Down with this all-white snooze—New York embraces all the colors of the palette.

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Said that same tennis-loving friend who texted me about Federer's nighttime look, Christina McHale's Lacoste dress appeared to be "the lovechild of frumpy and dumpy." Perhaps the young American should leave such frocks to the likes of Dominika Cibulkova, who relatively rocks them.

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Your (re)turn, tennis fans and fashionistas. Whose look inspired you to pull it off the rack and pull up at a tennis court? And whose needs to be put away in a time capsule forever?

Follow Jon on Twitter @jonscott9. News tips gladly accepted. Serving tips kindly refused.