Video: Mike Zunino hits first career walk-off hit to beat Chicago Cubs

Seattle Mariners catcher Mike Zunino (3) hits the game winning RBI single during the 10th inning against the Chicago Cubs at Safeco Field. Seattle defeated Chicago 5-4. (Steven Bisig-USA TODAY Sports)

Seattle Mariners catcher Mike Zunino (3) hits the game winning RBI single during the 10th inning against the Chicago Cubs at Safeco Field. Seattle defeated Chicago 5-4. (Steven Bisig-USA TODAY Sports)

The winning grounder up the middle for catcher Mike Zunino served as more than simply his first career walk-off hit. It also marked a huge milestone in his fast rise to the Bigs after starring for the Florida Gators at the collegiate level just last year.

[Related: Mike Zunino’s call-up to Seattle Mariners met with skepticism]

[Video via MLB.com]