Matt Beaty was able to retrieve the ball from his first big league home run Friday night without haggling over a price. He plans to give the ball to his father. “It wasn’t hard,” Beaty said. “I just signed a ball, and Belly [Cody Bellinger] signed a ball.” … Reliever Scott Alexander (left forearm inflammation) and outfielder A.J. Pollock (right elbow infection) began playing catch this weekend. … The Dodgers reportedly signed fourth-round pick Brandon Lewis, a power-hitting third baseman from UC Irvine, for $372,500.