Although the exact time of injury isn't known, it may have happened when Davenport was sliding or reaching for a low passing shot to her side during her semifinal win over Jennifer Capriati at the Australia Open in January. The Australian Open's medical staff advised her to sit out the next tournament, to prevent making the injury worse if she did not rest her hamstring properly. She did, withdrawing from the Pan Pacific Open, which began on January 31. Despite her hamstring and groin problems, she is currently on a 19-match winning streak.
Hamstrings are long muscles on the back of the thigh that are attached to the pelvis and the leg.
They are mainly responsible for moving both the thigh and the leg backward. As a result, the hamstrings are key muscles for running. Because the hamstring crosses two joints and is long, there are a great number of injuries to this muscle. It is probably one of the tightest and least stretched muscles in the body. The muscle most often injured in a groin pull is the adductor longus muscle, a long muscle on the inside of the thigh stretching between the pelvis and the thigh bone.