Kim in her last 5 matches against JHH & Williams'

Against Venus*
2002 Stanford Hard (O) FR Venus WILLIAMS 3-6 3-6
2002 San Diego Hard (O) QF Venus WILLIAMS 3-6 7-5 4-6
2002 W.T.A. Tour Championships Hard (I) SF Kim CLIJSTERS 5-0 Retired
2003 Antwerp Carpet (I) FR Venus WILLIAMS 2-6 4-6
2003 WimbledonGrass (O) SF Venus WILLIAMS 6-4 3-6 1-6

*Venus leads 4:1

Against Serena
2002 Tokyo Hard (O) FR Serena WILLIAMS 6-2 3-6 3-6 2002 W.T.A. Tour Championships Hard (I) FR Kim CLIJSTERS 7-5 6-3
2003 Hopman Cup 2003 Hard (I) R1 Serena WILLIAMS 5-7 3-6
2003 Australian Open Hard (O) SF Serena WILLIAMS 6-4 3-6 5-7
2003 Miami Hard (O) SF Serena WILLIAMS 4-6 2-6

Serena leads 4:1
*Against JHH

2003 Antwerp Carpet (I) SF Kim CLIJSTERS 6-2 7-6(3) 2003 Berlin Clay (O) FR Justine HENIN-HARDENNE 4-6 6-4 5-7
2003 Roland Garros Clay (O) FR Justine HENIN-HARDENNE 0-6 4-6
2003 's-Hertogenbosch Grass (O) FR Kim CLIJSTERS 6-7(4) 3-0 Retired
2003 Californian Hard(O) FR Justine Henin-Hardenne 6-2 3-6 3-6

JHH leads 3:2 *Venus and JHH retired in one of those five matches.
Kim is 4:11 in each of their last 5 matches (two victories to retirement) against the 3 other ladies who we consider her chief rivals. Has this ever happened to a #1 player?