(CNN)Twenty-three-time grand slam singles champion Serena Williams and her sister, seven-time major singles champion Venus Williams, will miss the final tennis major of the year, the US Open, the two announced on social media on Wednesday.

Serena Williams announced she would not be playing because of a hamstring injury, writing on Instagram, "After careful consideration and following the advice of my doctors and medical team, I have decided to withdraw from the US Open to allow my body to heal completely from a torn hamstring."