Both singles champions will take home $3.6 million, while first round losers take home $100,000 for the first time.
Professional tennis players are essentially self-employed, covering their own expenses, including travel, accommodation and wages for coaches and other staff. Those who lose in the early rounds of tournaments often barely break even.
Prize money at the U.S. Open has more than tripled since 2010, increased fivefold since 2000 and almost 20-fold since 1990.