SI Wire

Washington Nationals rookie Bryce Harper's walk-up song: Justin Bieber's "Boyfriend"

Washington Nationals outfielder Bryce Harper is known for drawing attention to himself, but he took it one step further on Tuesday night. The Nationals rookie slugger came to the plate with Justin Bieber's "Boyfriend" playing as his walk-up song.

The reason for Harper's music choice isn't known. The Washington Post suggested Harper lost bet. But maybe the lyrics of "Boyfriend" speak to the rookie.

"If I was your boyfriend, never let you go

Keep you on my arm girl, you’d never be alone

I can be a gentleman, anything you want

If I was your boyfriend, I’d never let you go, I’d never let you go."

Could the slugger just want all the ladies to know he's a gentleman? Could there be a special someone out there he's speaking to?

Either way, the 19-year-old is off to a strong start to his big league career. He is hitting .289 with seven homers in 45 games. And the Nationals hold a three-game lead in the NL East. If Harper and the team keep that up, fans won't care about the music he chooses.