Yelich carries the personality, and specifically sense of humor, that endear him to fans. He incinerates haters on Twitter (Relax Roxane), chugs beer at sold-out arenas and participates in the NBA Slam Dunk Contest.It’s an era of living legends in Wisconsin. Packers quarterback Aaron Rodgers has already cemented himself as an all-time great. Bucks forward Giannis Antetokounmpo is well on his way there, and a long-term extension of his own would solidify his place in city history.Yelich now has a chance at achieving his own regional immortality. He was born in Thousand Oaks, Calif., and began his MLB career in Miami, but he could perhaps live on the longest in his adopted Midwest home. Christian Yelich is now positioned to be known by your great-grandchildren as one of the most legendary Milwaukee Brewers hitters of all time. His baseball card could join those of Paul Molitor and Robin Yount as personal treasures that evoke some the very best fan memories for the Miller Park faithful.That might seem like hyperbole, but there is a strong case behind it. Yelich reportedly agreed to a nine-year, $215 million contract extension with the team Tuesday, which will keep him in Milwaukee until at least 2028. There is a mutual option on that deal for 2029, according to ESPN. If he remains relatively healthy, then he’ll be on track to join Brewers lore given his age (28) and what he has already done in navy and white.MORE: White Sox get 2020 rallying cry from unlikely sourceYelich has put together two impeccable seasons with the Brewers since being acquired from the downtrodden Marlins, winning NL MVP in 2018 and finishing as the runner-up to Cody Bellinger last year. He has 80 home runs, 207 RBIs and a 1.046 OPS since joining the club. He has been worth 14.7 wins over replacement in that time, per Baseball Reference.Just tripling his numbers from his start with the Brewers would place him in the upper echelon of the franchise record book — and that multiplication would be a conservative estimate of future production considering the length of his contract. With 240 home runs, he would rank third in Brewers history behind Yount and Ryan Braun. With 621 RBIs, he would rank eighth in Brewers history. With 44.1 wins over replacement, he would rank fourth in Brewers history. Again, these figures seem like baseline expectations for what a healthy Yelich would produce.Plus, there’s the fact that the Brewers have never won a World Series, something Yelich could help change. He’s already contributed to a Game 7 NLCS push, and while Milwaukee might struggle to get back to that level, there are few better superstars suited to spearhead a playoff run.