Tennis nowadays is so much more than just a sport. The world's press descend on the Grand Slams and players' fashion is always a talking point, things are no different at the US Open either.
As we enter the second week at Flushing Meadows, the best are being separated from the rest and they need their outfits to look sharp.
One person that won't be worrying about his attire is big-serving Canadian star Milos Raonic. It's always nice to get a compliment and it's even better if you have two world renowned tennis stars tweeting their appreciation.
That's right, both Serena Williams and Caroline Wozniacki have been throwing envious glances towards Raonic's arm sleeve.
The gentleman's fifth seed has been using the sleeve since earlier this year to protect himself from the sun and the styles are evolving tournament upon tournament.
Its become something of a lucky charm now for the 23-year-old, who when asked whether it helps his play said: "I'm not going to argue when things are going OK."
Neither Williams nor Wozniacki need an accessory to help their form, with both performing well in New York thus far. However, it won't stop them from wanting Raonic's vibrant sleeve.
Serena started the appreciation following Raonic's third round win over Víctor Estrella Burgos when she said: "I love your arm sleeve. It's super cool and different. Will it help my serve? I want to serve like you. #CanIHaveOne"
She certainly isn't the first person to admire Raonic's serve. The powerful man is currently fifth on the list of fastest tennis serves when he clocked over 150mph at the 2012 Rogers Cup.
Woznaicki also joined the Twitter love-in, she doesn't think her friend Serena needs the sleeve but she could see the attraction: "You already serve good enough, but I will take it."
Raonic soon replied to both the high-profile stars with a simple twitter hashtag of '#BelieveInTheSleeve'
Eventually everybody will need to switch their focus back to the court rather than what they're wearing on it.
Serena is aiming towards an 18th Grand Slam singes title this year, as well as defending her Flushing Meadows crown, and she faces Kaia Kanepi in round four. Raonic, meanwhile, who also in the fourth round, faces a mouth-watering tie with 10th seed Kei Nishikori.
Wozniacki, however, is already in the quarter-finals. The Dane overcame five-time major champion Maria Sharapova at the fourth stage in three sets. The 23-year-old was a finalist at this tournament in 2009 - her best ever finish at any Slam - and will be hoping to go a step further this time.
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