Second-seeded Elena Rybakina is a -300 favorite vs Qinwen Zheng in US Open women’s quarterfinal action Zheng and Rybakina have met five times, with Rybakina holding a 4-1 advantage See my Zheng vs Rybakina expert picks and updated odds below It’s already been a remarkable run for unheralded Qinwen Zheng, with some wild upset victories on her way to the quarterfinals. But it doesn’t get any easier, as she squares off Wednesday with no. 2 seed Elena Rybakina, who enters as the clear betting favorite. The pivotal question for my betting card is whether Zheng can protect her serve enough to push the powerhouse from Kazakhstan into deep waters. Rybakina boasts incredible form, but Zheng has proven she can light the lamp and force marathon matches on major stages. Action gets going this morning at 11:30am ET from Arthur Ashe Stadium at the USTA Billie Jean King National Tennis Center in Flushing Meadows, New York, with ESPN carrying ...