Saturday’s Most Valuable Promotions boxing event in San Juan, Puerto Rico was scheduled to be headlined by a title fight between undisputed featherweight world champion Amanda Serrano and Nina Meinke.  Moments before they were supposed to make the walk to the ring, the fight was cancelled.   MVP put out a press releases explaining that Serrano was not medically cleared due to an eye injury suffered on Friday.   “Amanda Serrano has unfortunately been declared medically unfit by the Puerto Rican Boxing Commission to fight tonight due to an eye injury she sustained yesterday,” the press release read