By Matt Hladik A diehard Los Angeles Dodgers fan’s recent tattoo is now an unfortunate reminder of how quickly things can change in professional sports. Earlier this month, a Dodgers fan attending spring training asked LA outfielder Cody Bellinger to autograph his arm. He did the same for outfielder/first baseman Matt Beaty. Both players obliged, and the fan eventually turned the two signatures into permanent ink. Well, now he has a problem. Earlier this week, the Dodgers traded Beaty to the San Diego Padres in exchange for minor league infielder River Ryan. That’s right, the poor Dodgers fan …