Watch Viral Crowd Reaction to Fernando Tatis Jr.'s Epic WBC HR in Trending Video

Any concerns the World Baseball Classic would have more of a spring training or exhibition feel to it have long been put to rest. 

All it takes is one look at the crowds.

Fernando Tatis Jr. electrified the crowd Wednesday when he launched a three-run homer in the top of the fourth inning to help lead the Dominican Republic to a 7-5 victory over Venezuela. The win helped the Dominican Republic finish with an undefeated 4-0 record in Pool D play.

And if Tatis keeps hitting home runs like that, the Dominican Republic is a legitimate threat to win the entire tournament.