A couple of days after Rafael Nadal defeated World No. 1 Daniil Medvedev to win the 2022 Australian Open, he announced his collaboration with Non-Fungible Tokens (NFT) platform Autograph.Co-founded by American NFL legend Tom Brady, the Autograph aims to bridge the gap between the biggest stars in sports/entertainment and their fans by creating digital collections and experiences. And soon after Nadal won his 22nd Grand Slam title in Paris last month, the Autograph announced its decision to honor the special milestone by launching El Rey: The Rafael Nadal Collection.There are two types of NFTs in the collection. The first are the '22' collectibles and the second are the 2,800 Rafael Nadal: El Rey Mystery Containers. These containers include one of six trading cards, three embossed and three in color. The cards are called The Prodigy, The Master and The King.Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…Autograph@Autograph‘El Monumento’, hand-signed by @RafaelNadal.Complete collection challenges by collecting ‘The Prodigy’, ‘The Master’, and ‘The King’ NFTs, in either color or embossed rarities, to receive yours.Challenge deadline July 20 / 3pm ET.Collect yours here: fal.cn/Rafa1506133‘El Monumento’, hand-signed by @RafaelNadal.Complete collection challenges by collecting ‘The Prodigy’, ‘The Master’, and ‘The King’ NFTs, in either color or embossed rarities, to receive yours.Challenge deadline July 20 / 3pm ET.Collect yours here: fal.cn/Rafa https://t.co/MCbs9iSOsvVery interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…However, not many are happy with one of the greatest players in tennis history promoting something like NFTs, a matter on which most of the world stands divided. Fans are calling out the legend, expecting him to end the collaboration. Here are a few fan reactions to Nadal's latest tweet."For all the trouble Novak’s been in the last year, I’m glad he never attached his name to an obvious scam like NFTs," a user wrote.🌱@returnwinnerFor all the trouble Novak’s been in the last year, I’m glad he never attached his name to an obvious scam like NFTs. twitter.com/RafaelNadal/st…Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…1506133Very interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…For all the trouble Novak’s been in the last year, I’m glad he never attached his name to an obvious scam like NFTs. twitter.com/RafaelNadal/st…Claudia P. 🦋🦋❤️💚@deetsyI'd rather buy his brown loafers than an NFT. twitter.com/RafaelNadal/st…Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…2133Very interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…I'd rather buy his brown loafers than an NFT. twitter.com/RafaelNadal/st…Thanos@Thanos00000001@RafaelNadal Garbage , you better than that Rafa@RafaelNadal Garbage , you better than that RafaTenista Ang@AngTenista@RafaelNadal pfffttt! you probably don't even know what nft means3@RafaelNadal pfffttt! you probably don't even know what nft means"Your regular reminder that NFTs are dumb and should be fired into the sun," a tweet read.Owen@tennisnationYour regular reminder that NFTs are dumb and should be fired into the sun. twitter.com/rafaelnadal/st…Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…321Very interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…Your regular reminder that NFTs are dumb and should be fired into the sun. twitter.com/rafaelnadal/st…"I am once again saying it's even more frustrating when you know Rafa wouldn't be able to explain what an NFT is if his life depended on it," another tweet read.🌾@jaluhmI am once again saying it's even more frustrating when you know rafa wouldn't be able to explain what an NFT is if his life depended in it twitter.com/RafaelNadal/st…Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…1514133Very interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…I am once again saying it's even more frustrating when you know rafa wouldn't be able to explain what an NFT is if his life depended in it twitter.com/RafaelNadal/st…ً@vettstappenhe’s a 10 but he promotes nfts twitter.com/rafaelnadal/st…Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…4133Very interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…he’s a 10 but he promotes nfts twitter.com/rafaelnadal/st…Hassan Talal@HassanTalal23Rafa I love you but NFTs are scam 🤮 twitter.com/RafaelNadal/st…Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…1133Very interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…Rafa I love you but NFTs are scam 🤮 twitter.com/RafaelNadal/st…TT Local@BroodjaaschkaIt's almost as if his accout is hacked twitter.com/RafaelNadal/st…Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…1514133Very interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…It's almost as if his accout is hacked twitter.com/RafaelNadal/st… https://t.co/NA72fMM5vy🦙Stressy & Depressy 💉🇹🇹🏳️‍🌈@GMGigiAnother fallen soldier twitter.com/rafaelnadal/st…Rafa Nadal@RafaelNadalVery interesting opportunity these misters containers #… twitter.com/autograph/stat…1514133Very interesting opportunity these misters containers #… 😉 twitter.com/autograph/stat…Another fallen soldier twitter.com/rafaelnadal/st…TheCleverPork@pdcunningham1@RafaelNadal Nooooo they got Rafa 1@RafaelNadal Nooooo they got Rafa 😭"I’m blocking Autograph. Rafa, send out a better tweet, you're better than that," a user posted.Robert I@Putinpoisoner@RafaelNadal I’m blocking Autograph. Rafa send out a better tweet your better than that.2@RafaelNadal I’m blocking Autograph. Rafa send out a better tweet your better than that.Rafael Nadal's Calendar Slam dream ended in an unfortunate mannerNadal is undefeated at this year's Majors.Struggling with abdomen issues for a few days, Rafael Nadal was spotted wearing athletic tape just below his stomach when he was in London for the Wimbledon Championships. The Spaniard returned to the grasscourt Major after three years, his last match coming against Roger Federer in the semifinals in 2019.During Nadal's quarterfinal match against Taylor Fritz, the injury deteriorated, forcing him to take a medical timeout in the second set. There was a significant decline in his movement and serve speed, but he continued till the end, winning the match in a thrilling five-set encounter.A day later, reports suggested that Nadal had a seven millimeter muscle tear in the abdominal area. The injury forced him to withdraw from the event a day before he was scheduled to face Nick Kyrgios in the semifinals, thus ending his hopes of winning the elusive Calendar Grand Slam.