Meet CiCi Bellis, The Teen Who Pulled Off US Open's First Stunner

— -- NEW YORK -- CiCi Bellis looked at her dad and coaches for help.

The look of wonder and disbelief had not yet faded Tuesday from the 15-year-old's face after becoming the youngest winner at the US Open in 18 years and youngest American in 28. That she defeated the tournament's No. 12 seed, the 2014 Australian Open runner-up Dominika Cibulkova, who was ranked 10th in the world in March, made everything else at this moment irrelevant.