Getty Christian Yelich runs toward first base after hitting a two run homer. The Milwaukee Brewers may have found a formula for Christian Yelich’s resurgence—and it doesn’t involve launch angle charts or swing path tweaks. Instead, the key appears to be something far less technical, but no less effective: a pink bat with his mom’s name engraved into it.  Yelich’s decision on how to honor his mom, Alecia, for Mother’s Day wasn’t just a feel-good gesture–it may have broken him out of one of his