A little off topic but the Chris range of racquets were all the same mold, but with different compositions. Top model had boron, then came the Power-G 100% graphite, then the Competition 80/20 graphite/fibreglass and finally the Avenger 50/50 graphite/fibreglass.
Incidentally, the fibreglass in these frames was "S2" fibreglass - supposedly stronger. Does anyone have any info on "S2"?
See my racquet collection at www.80s-tennis.com/pages/virginia-crawford.html and my addition to the Borg collection of the now rare Donnay Diamant.