Ball recently revealed details about the pregnancy.
His daughter is due on July 16, according to NBA.com.
"Yeah it's crazy. My whole family is all boys," Ball said. "We only have like two girls in the whole family. It's just my mom and her mom. My dad has five brothers [and two sisters], I have my two brothers [obviously]. All boys."
Ball, 20, confirmed that Garcia was pregnant in February.
"Not yet," he said, when asked by ESPN if his life has changed dramatically since joining the league. "Probably will when [the baby] gets here."
Ball and Garcia have dated since their years together at Chino Hills High School.
Ball is averaging 10.2 points, 7.2 assists and 6.9 rebounds per game this season for the Lakers. The No. 2 overall pick in the 2017 NBA Draft is currently sitting out due to a left knee contusion.