The SBS drama series “Doctors” has kicked off as of Monday, with Park Shin-hye perfectly pulling off the role as teenage troublemaker Yoo Hye-jung.Here are three best fighting scenes of Yoo Hye-jung in the first episode of “Doctors”:1. Doctor Yoo knocks out gangsters 2. Girl-crush Hye-jung fights against bullies 3. Hye-jung in a gang fight at a club “Doctors” starring Park Shin-hye, Kim Rae-won, and Lee Sung-kyung airs every Monday and Tuesday at 10 p.m. on SBS.By Kim Ji-young ()