What to know

• Katerina Siniakova and Taylor Townsend rallied to beat Ashlyn Krueger and Robin Montgomery for the US Open women's doubles title on Friday, completing a career doubles Grand Slam.For Siniakova, it was a 12th Grand Slam women's doubles title and a second career...S1
• "There was lot of nerves. We were really fighting for this one, so I’m just really proud. We did it.”S2
• Taylor Townsend and Katerina Siniakova have won their first U.S. Open women's doubles title together.S3