As her longtime foe Aryna Sabalenka slammed her racket in frustration, Elena Rybakina opted for a relatively demure double-fist pump of sorts when she won the U.S. Open. ↧ Elena Rybakina, the world’s No. 1 tennis player, shares her secre... Rybakina, 27, achieved the top ranking in women’s tennis en route to winning the U.S. Open.