I didn't get why... [may contain spoilers]

hiawg if you were paying attention to the movie you would have saw that the reason why Bum was with the other pageant contestant was because he was ALREADY leaving her a voicemail as he was walking to his house.He found the baseball AFTER he called her over.The reason why Tata gave him the signed Roberto Clemente ball was because she knew Bum wanted it so she used it to bribe him to not trick on her when he found out the birth certificate was for her.Now if I got you wondering what birth certificate WATCH THE MOVIE AGAIN BUT THIS TIME PAY ATTENTION!