The clinical name for Down syndrome is trisomy 21, a condition in which a person is born with an extra chromosome, causing mild to moderate cognitive disability, developmental delays and physical challenges.

ARLINGTON, Texas - New Texas Rangers corner infielder Jake Burger picked his new jersey number to honor his daughter. Burger will wear the number 21 with the Rangers this season. Burger chose the number in honor of his daughter, Penelope, who was born with Down syndrome.

The new Rangers first baseman announced Friday that he will wear No. 21 to pay tribute to Penelope, who was born with Down Syndrome, and to raise awareness for the genetic condition.