She sticks out like a sore thumb. At first glance, in a room full of tall and muscular boxers, the 5-foot-3-inch Christina Kwan looks like someone who accidentally stumbled into the wrong place.

But after watching her spar with former World Boxing Organization (WBO) world junior welterweight champion DeMarcus "Chop Chop" Corley at the Top Rank Gym, 3041 Business Lane, in preparation for her professional boxing debut, it's quite evident this is not some little girl who wants to do what the boys do -- this is a pugilist intent on leaving her mark as well as making a name for herself in the sport.