The past few baseball seasons have seen thousands of pitches thrown out, but 30 of those in particular have been very special indeed.
Hailey Dawson was born with Poland syndrome, a condition which prevented her right hand from developing fully.
However, thanks to a 3D-printed hand from the University of Nevada, Las Vegas, she has just completed an incredible challenge, throwing an opening pitch at every MLB ground.
Prosthetics can be incredibly expensive, but with the help of the University of Nevada Hailey was able to wear a much more affordable alternative, adjusted to fit her wrist.
The journey began in 2015 at a Baltimore Orioles game and came to its conclusion at Angel Stadium ahead of the LA Angels game against Seattle Mariners, where Hailey threw the final pitch next to Jim Abbott, a left-handed pitcher who was born without a right hand.
It looks as though Hailey left an impression on every ground she visited, with plenty congratulating her on social media.
Great job, Hailey.