Naomi Osaka was eliminated from the Italian Open on Monday after being beaten by Peyton Stearns 6-4, 3-6, 7-6 (7/4) as her struggles for form at the top level continued. In the quarter-finals Stearns will face one of Danielle Collins, who knocked out reigning champion Iga Swiatek, or Elina Svitolina after coming through an attritional match which lasted two hours and 43 minutes on a baking centre court. Osaka is another big name that American Stearns has beaten in Rome after also knocking out fifth seed Madison Keys in the previous round. Former world number one Osaka has looked a long way from the player who has won four Grand Slams since returning last year from a 15-month break from tennis for the birth of her daughter.