Nick Castellanos' son Liam has become part of the Phillies' playoff run

Who is Liam Castellanos, the Phillies' social media sensation?

Phillies-Diamondbacks: Score, highlights, recap, next game, NLCS schedule

Plays critical role in record-tying six homer blowout of Braves

Liam, son of Phillies' Nick Castellanos, donates to Philadelphia pediatric cancer nonprofit

Nick Castellanos enjoys playoffs with son Liam

Nick Castellanos' son Liam is Phillies' good luck charm

Nick Castellanos and His Son Liam

Nick Castellanos Has Something in Common With Reggie Jackson

Phillies beat Braves 3-1 and advance to NLCS for 2nd straight season

MLB fans in awe of Nick Castellanos and his son Liam as father-son duo attends

Phillies fans turn Citizens Bank Park into '4 hours of hell' during Red October

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