Former champ Rybakina through after Kalinskaya retires

The Moscow-born Kazakh broke back before drawing level at 3-3 when Kalinskaya began to struggle with a right forearm issue that she had treated after losing another game.

Anna Kalinskaya has her arm attended to by a physio during her match against Elena Rybakina. (EPA PHOTO)

Kalinskaya appeared to have overcome the problem, much to the relief of her boyfriend and world No.1 Jannik Sinner, who was watching on from the Centre Court stands, but she was unable to prevent Rybakina from winning the first set.

The 25-year-old saved a breakpoint with a powerful ace and consolidated a break in the second set for a 2-0 lead, but the problems returned for Kalinskaya.

She dropped another game to go a double break down before throwing in the towel and walking off disappointed.