Felix Hernandez's son may or may not realize the first pitch is ceremonial

Seattle Mariners pitcher Felix Hernandez's son threw out the first pitch at Sunday's game and took it pretty seriously.

The Seattle Mariners celebrated Father's Day by having a few players catch ceremonial first pitches from their children and Felix Hernandez's son stole the show. 

Hisashi Iwakuma's son Towa, Seth Smith's daughter Siena, Jesus Sucre's son McKenzie and Hernandez's son Jeremy all showed off their arms before Sunday's game. Towa wore a full uniform and perfectly mimicked his dad's pitching motion, but Jeremy was the real star.

Jeremy came dressed to impress in jeans and high-top gold sneakers. He reared back and uncorked a vicious fastball that sent his father leaping into the air. And then the Mariners' pitchers allowed six runs on 10 hits. 

• Dexter Fowler's daughter was thrilled her dad hit a grand slam

- Dan Gartland