Holy first pitch, Batman! This kid has an arm.

The tiniest superhero in the world, Batkid, threw out the first pitch for the San Francisco Giants’ home opener on Tuesday in front of a packed house at AT&T Park, according to USA Today.

Batkid is the alter ego of 5-year-old Miles Scott, a kindergartner who is in remission from leukemia. Scott captured America’s attention in 2013 when San Francisco and the Make-A-Wish Foundation threw a massive, daylong celebration for the minuscule masked vigilante.

- See more photos here.

- See video here.

- Read more at usatoday.com