She's 23 and misses as many matches now as she plays. It's always something. Although this can't be proved, as myself and many others have stated on this forum, she'd do well to lose some weight--about 20 pounds. Maybe this would alleviate some strain on her joints, especially her problem knees and ankles (let alone every other part of her body). Again, all of this points to an inadequate fitness program. Also, she needs a top flight coach to keep her accountable, improve some of her faulty technique and oversee her approach to tennis. Her career is slowly wasting away.