This came one day after they traded for one of the top closers in the game, Josh Hader, with the Milwaukee Brewers. With legal New York mobile sports betting finally a go, you can bet on the Mets all season long as well as all of the other teams in the league. Below you’ll find everything you need to know about betting on the Mets. We8217;ll dive into some team history, point you to the latest and best odds, and much more. While the history of baseball was thought to date back to the 18th century, MLB was established in 1869 when the first professional club in the Cincinnati Red Stockings was established. In 1978 the National League of Professional Baseball Clubs, known as the National League (NL), was established. (Try to) Climb those poles Philadelphia! Safely, of course! read the review Continuing on their roll, the Rockies swept the Philadelphia Phillies and Arizona Diamondbacks to win their first-ever National League pennant.