the chase. david? steve osunsami tonight. thank you, steve. and now, to a stunning headline involving american skater mariah bell. she is accused of using her skate blade to attack a rival. tonight, an olympic skater is now defending her, and here s abc s kayna whitworth. reporter: it was a stunning allegation, american figure skater mariah bell accused of intentionally injuring a fellow skater. a representative for korean skater eun soo lim telling media bell struck kim s leg with her skate, cutting her calf during warmups at the world championships in japan. the 16-year-old went onto compete, spotted with a band-aid on her calf. even scoring a personal best, placing fifth, just ahead of bell. this season, i will continue to follow my dream of making the olympic team. reporter: bell was featured in this 2017 u.s. figure skating video, and she trains with lim under the same coach at this california rink. lim s representatives reportedly claimed bell had been bullying lim for