US Open winner gets $3.7mn, had earlier won $4.5mn in 7 yrs
US Open women's singles champion Sloane Stephens has nearly doubled her career earnings from $4.5 million, earned in her 7-year-long professional career, to $8.2 million with a single Grand Slam title. The world number 83, who claimed her maiden Grand Slam title on Saturday, said, "I should just retire now...I'm never going to be able to top this."