Grind Mode presented by the Army National Guard. Kelsie Whitmore broke barriers when she became the first female baseball player to start in an Atlantic League game, but she's not done yet. Join the superstar for a sneak peak at all the work she puts in behind the scenes. Learn more: nationalguard.com SUBSCRIBE to Whistle for more awesome videos! - goo.gl/y2JNsG Still want more Whistle? Follow us on: TIKTOK: tiktok.com/@whistle INSTAGRAM: instagram.com/whistlesports TWITTER: twitter.com/whistlesports FACEBOOK: facebook.com/whistlesports WHAT IS WHISTLE? Whistle creates uplifting sports and entertainment content highlighting incredible athletes, amazing entrepreneurs and future stars. Our flagship series include No Days Off, My Hustle & Dunk League and we've feature talent like Patrick Mahomes, Trae Young, Ja Morant, Karl Anthony Towns, A'ja Wilson, Cooper Kupp, Kyrie Irving, Snoop Dogg, Joel Embiid, G-Eazy, Trea Turner & J.R. Smit...