Liam's adorable gestures to dad Nick Castellanos melt fans during

MLB ⚾ on Instagram: The relationship between Nick Castellanos and his son, Liam, is awesome. #FathersDay

LiamCastellanos is always cheering on his #dad #NickCastellanos ❤️ (v, nick castellanos

Fans react to Brandon Marsh's wholesome moment with Liam after Nick Castellanos' homerun vs. D-backs: This is awesome

Nick Castellanos son Liam continues impressive week in the stands at Phillies games

Nick Castellanos found his son after hitting a HR ❤️, Nick Castellanos found his son, Liam, after hitting a HR ❤️ (h/t Phillies Muse), By CBS Sports

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Dad put on a show in Game 3 🥺 (🎥: @MLB) #castellanos #phillies #mlbp, liam castellanos

We mic'd up Nick Castellanos' son Liam and it was awesome ❤️ #fathersd, nick castellanos son

Nick Castellanos' wife wants the jokes to stop

LiamCastellanos is always cheering on his #dad #NickCastellanos ❤️ (v, nick castellanos

Nick Castellanos' son is his father's biggest fan

MLBFITS on Instagram: Liam Castellanos and his dad Nick are the best dressed father-son duo in baseball 🥰👀 (🎥: @mlb )

A fan insisted on giving Nick Castellano's son, Liam, a foulball, thou, nick castellanos