MASON, Ohio — Serena and Venus Williams played their first doubles match together since the 2022 US Open and lost a thriller, 2-6, 6-1 (10-8) to Marta Kostyuk and Peyton Stearns on Monday night at the Cincinnati Open. This was their first doubles appearance in a non-Grand Slam event since the Italian Open in 2016. Key points and original sources are listed below.

• MASON, Ohio — Serena and Venus Williams played their first doubles match together since the 2022 US Open and lost a thriller, 2-6, 6-1 (10-8) to Marta Kostyuk and Peyton Stearns on Monday night at the Cincinnati Open. The sisters nearly recovered from a 6-0 de...S1

• This was their first doubles appearance in a non-Grand Slam event since the Italian Open in 2016.S2