By Will Swanton NEW YORK (Reuters) - Victoria Azarenka walked off court with her head held high after a gallant loss to Serena Williams in the U.S. Open final on Sunday, and while satisfied she had given her all there was no doubt the defeat stung. "I'm not going to lie. It hurts bad," she conceded after a 7-5 6-7(6) 6-1 at Flushing Meadows. "It's okay. I did everything I could. I gave my heart. I fought as hard as I could. "I lost to a great champion and I'm still going to have my head up. ... Click here to read full news..