Arizona Cardinals and former Houston Texans defensive end J.J. Watt announced his retirement at the end of the season this morning via Twitter. The legendary pass rusher intends to call it a day following the end of the 2022 campaign. Here's what he tweeted:"Koa’s first ever NFL game. My last ever NFL home game. My heart is filled with nothing but love and gratitude. It’s been an absolute honor and a pleasure."JJ Watt@JJWattKoa’s first ever NFL game. My last ever NFL home game. My heart is filled with nothing but love and gratitude. It’s been an absolute honor and a pleasure. 🏼1027108851Koa’s first ever NFL game. My last ever NFL home game. My heart is filled with nothing but love and gratitude. It’s been an absolute honor and a pleasure. 🙏🏼 https://t.co/wXbDUcHM8BWatt was the Houston Texans' first-round draft pick in 2011. He played with the Texans through to the end of the 2020 season and had one of the best defensive runs as a Texan.He joined the Arizona Cardinals in 2021, signing a two-year, $28 million contract. He intends to play through his contract and walk away from the game at the conclusion of the 2022 campaign.Fans across the football world congratulated Watt on his excellent career. Many complimented him on being an incredible person, while others said that his next stop will be in Canton, Ohio, in the Hall-of-Fame. Here's how fans reacted to the news:Brett Kollmann@BrettKollmann@JJWatt One of the best to ever do it, both on the field and off.Congratulations on an amazing career, JJ. Now go be an amazing Dad too.10945@JJWatt One of the best to ever do it, both on the field and off.Congratulations on an amazing career, JJ. Now go be an amazing Dad too.NFL@NFL@JJWatt All-time player. All-time person.222658@JJWatt All-time player. All-time person.Pete Prisco@PriscoCBS@JJWatt Canton will be calling in five. Great player.19@JJWatt Canton will be calling in five. Great player.Ryan Switzer@Switz@JJWatt All time person. Congratulations, bro.21@JJWatt All time person. Congratulations, bro.Dan Orlovsky@danorlovsky7@JJWatt One of the best to ever do it First ballot HOF6536@JJWatt One of the best to ever do it 👏👏First ballot HOFMatt Pomeroy@MattPomPom@JJWatt The NFL will miss your skills and class.621@JJWatt The NFL will miss your skills and class.Jason Romano@JasonRomano@JJWatt Next stop — Canton, Ohio @ProFootballHOF21@JJWatt Next stop — Canton, Ohio @ProFootballHOF🏈3️⃣5️⃣ (𝗖)@Tr3yFiv5@JJWatt Damn.. always thought you would go finish in Pittsburgh with your brothers8@JJWatt Damn.. always thought you would go finish in Pittsburgh with your brothersErica Kaiser@EricaKaiser_@JJWatt Congratulations on an incredible career, enjoy fatherhood :)21@JJWatt Congratulations on an incredible career, enjoy fatherhood :)Keaton@htx_keaton06@JJWatt sign with houston for a day so you can retire a texan?4@JJWatt sign with houston for a day so you can retire a texan?Regression to the Mean@RTMFantasy@JJWatt @StainbrookNFL The end to a truly legendary career. Congrats JJ!2@JJWatt @StainbrookNFL The end to a truly legendary career. Congrats JJ!Could J.J. Watt be a first-ballot Hall-of-Famer?J.J. Watt - Tampa Bay Buccaneers v Arizona CardinalsJ.J. Watt will more than likely become a first-ballot Hall-of-Famer. In fact, it would be controversial if he isn't. Watt has an NFL record in most 20+ sack seasons (2) and also seasons leading the league in sacks (2.) He is also a three-time Defensive Player of the Year, Walter Payton Man of the Year, and was named to the 2010's NFL All-Decade team.He earned five Pro Bowl selections while earning seven All-Pro team selections (five First-Teams) while recording 580 tackles, 115.5 sacks, 69 pass deflections, 27 forced fumbles, and 17 fumble recoveries.He is arguably the Texans' best defensive player and player in franchise history. His brother, T.J., is amongst the best defensive players in the league as he won last year's Defensive Player of the Year Award with the Pittsburgh Steelers.Another brother and also a Steeler is Derek Watt. Derek plays fullback and is largely touted to be the most complete player of the trio. Perhaps Pittsburgh should utilize the fullback's skillset more going forward. Either way, as one Watt retires, we have two others in the league following in their brother's footsteps.