had a great Monday. He signed a 10-year contract extension worth a whopping $503 million to remain with the . ESPN's Adam Schefter was believed to be the first person to tweet out the news, but actually he was beat by someone who isn't even a reporter., Chiefs fan Katie Camlin sent out a tweet about Mahomes signing an extension 90 minutes prior J.R. Richard Jersey to Schefter. Camlin told USA Today that at 1:21 p.m., her bo s at Plaza Liquor in Kansas City, Mi souri, informed her that Chiefs employees had come into the store looking to purchase six bottles of Dom Perignon champagne.Camlin then sent out a tweet that she ended up deleting: "A front office employee for the Chiefs came in Houston Astros Blank Jersey and bought 6 bottles of Dom Perignon. Said there's a big signing today. He said it's not , so my gue s is a Mahomes deal."Camlin, who was ultimately correct, said she deleted the tweet because she was "terrified" of getting in trouble and angering the Chiefs."I didn't Jake Marisnick Jersey want to lose their busine s,"Camlin said. "I was afraid they'd be mad. So I deleted it. But of course, screenshots are forever."Perhaps it was more of a gue s than an actual report, but it was certainly a very educated one given that Kansas City employees Lance McCullers Jersey were in the store to purchase champagne.After the news officially broke a few hours later, Camlin tweeted, According to Schefter, Mahomes' extension will be worth at least $450 million and he could earn up to $503 million over the course of the contract.Mahomes has accomplished quite a bit during his three NFL seasons and has blo somed into arguably Dallas Keuchel Jersey the best signal caller in the league. The former first round pick threw for 5,097 yards and 50 touchdowns in his 2018 MVP season. To follow it up, Mahomes led the Chiefs to a Super Bowl title last season despite mi sing time due to a knee injury.