Video of a fiery Valentina Shevchenko cornering her sister is awesome to watch

When you think of UFC women's flyweight champion Valentina Shevchenko, does "fired up" come to mind? Probably not, right?. Unless she's celebrating a win with a dance, Shevchenko is always so mild-mannered and rarely shows emotion. That all changes when she's in the corner of her sister, Antonina Shevchenko. Here's...