GREY'S ANATOMY - "I'm Winning" - Cristina is nominated for a Harper Avery and although most of her fellow doctors are ecstatic, she won't let herself get too excited. Bailey continues to work on a young boy without an immune system -- Alex considers making a change, and Derek and Callie work with a machine that can recognize emotions. Meanwhile, Richard gives the residents a pep talk about the exciting projects going on around the hospital on "Grey's Anatomy," THURSDAY, APRIL 10 (9:00-10:00 p.m., ET) on the Walt Disney Television via Getty Images Television Network. (Danny Feld/Walt Disney Television via Getty Images)