The Best and Worst Dressed in Tennis During the 2015 Season

With a few weeks remaining in 2015, sporting goods companies are already previewing the 2016 Australian Open attire of the top tennis stars.

What better time than now to look back at the best- and worst-dressed players this past season?

Serena Williams kicked off the year with a racy outfit at the Australian Open.

The French Open featured funky, black outfits for ball girls and Stan Wawrinka's unforgettable plaid shorts.

Wimbledon whites were transparent, as mesh material reigned at the All England Club. The U.S. Open got underway with Nike taking to the streets to promote its clothing and stable of stars, including Williams, Roger Federer, Rafael Nadal and Maria Sharapova. 

The always sophisticated Federer made neither the best nor the worst list. His outfits never disappoint. But this year they didn't wow either.

The same is true for Novak Djokovic, who has established somewhat of a uniform. Djokovic wears the same finely trimmed polo and shorts by Uniqlo to every match. He just changes colors, never the style.

Those on this list represent the absolute best and worst dressed of 2015.

Honorable Mention Worst: Mayo Hibi, U.S. Open

Kathy Willens/Associated Press

Mayo Hibi hits a forehand at the 2015 U.S. Open.

This plaid monstrosity came from the same Yonex collection worn by Wawrinka at the French Open. Mayo Hibi breaks that simple rule when it comes to wearing patterns: Don't overdo it. One piece per outfit is the way to rock checks, stripes or tartan patterns.

Had Hibi worn those shorts with a solid-black top for that shirt with a black skirt, she would have made a statement—instead of mistake.

Honorable Mention Best: Alize Cornet, French Open

David Vincent/Associated Press

Alize Cornet hits a backhand during the 2015 French Open.

Alize Cornet's look at the French Open is a good example of how to punctuate a look with pops of color. Her red shoes, wristbands and accent color on her racket complement this lovely blue dress with pleated skirt.

Worst: Stan Wawrinka

Aurelien Meunier/Getty Images

Stan Wawrinka roars after winning a point at the 2015 French Open.

Wawrinka's outfit was so bad that it became a Twitter sensation. Wawrinka brought the pajama-looking shorts to his final press conference at the French Open.

Those shorts give new meaning to the term, "winning ugly."

Best: Jo-Wilfried Tsonga, French Open

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Jo-Wilfried Tsonga hits a backhand during the 2015 French Open.

Jo-Wilfried Tsonga's Adidas French Open ensemble was easily one of the top three best looks on the ATP World Tour. From the front, it looks like a classic polo and shorts trimmed in white. But from the back, it takes on a bold look inspired by soccer uniforms.

The floral-patterned shoes add a Bohemian touch to the high-gloss look.

Worst: Yulia Putintseva, Wimbledon

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Yulia Putintseva during a Wimbledon match against Venus Williams.

Yulia Putintseva must have misunderstood the All England Club's all-white-attire requirement. Perhaps she thought "all white" meant wearing tighty-whities.

Best: Maria Sharapova, Wimbledon

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Maria Sharapova hits a forehand during the 2015 Wimbledon Championships.

Maria Sharapova's Wimbledon dress is white done right. The geometric shapes on mesh material add texture and interest to the all-white ensemble. It's a play on lingerie—instead of the outright underwear-like outfit Putintseva wore.

Worst: Tomas Berdych, U.S. Open

Kathy Willens/Associated Press

Tomas Berdych hits a forehand during a 2015 U.S. Open match.

Tomas Berdych has built his H&M style on chaotic patterns. Instead of "less is more", Berdych subscribes to a the-more-the-merrier approach when it comes to colors and designs.

His eye-burning outfits are just too much.

Best: Venus Williams, Wimbledon

Pavel Golovkin/Associated Press

Venus Williams during a match at the 2015 Wimbledon Championships.

Berdych should consider the simple elegance in this outfit Venus Williams wore at Wimbledon. The high-back, crisscross cutout shows skin—but in the least revealing area. It's classy with a hint of sassy—by far one of the best looks of the year.

Worst: Anna Tatishvili, U.S. Open

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Anna Tatishvili reaches to make a play on the ball at the 2015 U.S. Open.

Color blocking was a big trend in tennis fashion this year. But this outfit by Fila defines a concept gone wrong. The chunky, black and white colors are not helped by knee-high socks.

Best: Rafael Nadal, French Open

Michel Euler/Associated Press

Rafael Nadal serves at the 2015 French Open.

Instead of harsh color blocking, this ensemble by Nike is the perfect example on how to blend blocks of color. The gradient shades of blue blend so well—they appear to be poured onto Rafael Nadal's outfit. The splashes of orange work well against the backdrop of the red clay.

Worst: Agnieszka Radwanska, Rogers Cup

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Agnieszka Radwanska hits a forehand at the 2015 Rogers Cup.

Taking fashion risks can be rewarding if a player strikes the right tone.

Agnieszka Radwanska took a chance with this metallic nightlife design by Lotto for the Rogers Cup. However, the glitzy camouflage-like fabric missed the mark.

Radwanska joked, via Tweeter, that after the match, she could head straight for the disco. Perhaps she's talking about the "Disco Inferno," where that dress can "burn, baby, burn."

Best: Serena Williams, Australian Open

Andy Brownbill/Associated Press

Serena Williams poses for photographers during the trophy ceremony of the 2015 Australian Open.

Serena Williams wrote the book on daring outfits. Who can forget the catsuit? But in the past five years, Williams has traded in her wilder side for more classic, A-line dresses. Well, that was until this year in Melbourne when she unveiled a stunning Nike tunic.

The neon colors and form-fitting design were enough to land this look on a best-dressed list. But the back of the dress, which looked like a two-piece, made the design an absolute showstopper.