Bucks’ Giannis Antetokounmpo joins ownership group of MLB’s Milwaukee Brewers from Zac Wassink with YardBarker.com/www.yardbarker.com Patrick Mahomes of the Kansas City Chiefs and Milwaukee Bucks superstar Giannis Antetokounmpo both have Most Valuable Player awards on their resumes and now have something else in common. On Friday, the Milwaukee Brewers of MLB announced Antetokounmpo has purchased a stake in the club to become part of its ownership group. “We are honored to have Giannis join our team of Milwaukee Brewers investors,” Brewers principal owner Mark Attanasio said for the team’s website. “Giannis is a great athlete, a world champion and a…