Mike Aviles was definitely a proud papa Thursday night.

The Indians infielder accompanied his twin daughters on the mound for ceremonial first pitches before Thursday's series finale with the Yankees.

Adriana, 4, was diagnosed with childhood leukemia in May.

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Aviles joined MLB Network's Intentional Talk before the big moment and talked about his daughter's bravery as she battles cancer.

Check it out:

There's no doubt Adriana stole everyone's heart at Progressive Field when she and her sister took the mound:

Absolutely perfect.