The 10-week-old black Labrador puppy made his MLB debut Wednesday in Philadelphia.

We know Philly loves an underdog, but with the latest addition to their roster, the Phillies have taken that a little literally.

A 10-week-old black Labrador puppy, Major made his MLB debut Wednesday as part of a partnership between the Phillies, Team Foster, and the Warrior Canine Connection. He’s now officially part of the Phillies’ off-the-field roster, and will make guest appearances at games to meet fans and take part in military-themed and community events, the team said.

Read the full story in The Philadelphia Inquirer.