I don't.
Seles didn't play for 2 years after the stabbing. The shock of the stabbing, the grief of learning that her father had been diagnosed with cancer and the - from her POV - inappropriate punishment of the attacker obviously contributed to this.
When she returned to the game she was quite good for about one year but suffered from injuries later, saw her father die of cancer, had considerably gained weight.
Her father's suffering and death, her gaining weight, her injuries had nothing to do with the stabbing. To say otherwise means exaggerating the impact of the stabbing in order to dismiss and diminish Steffi Graf's accomplishments. A player who had to go through too much duress for herself to be denigrated like that.
Condi
What led to the STABBING?
Seles won more major titles in the 3 year period (12 for Seles vs. only 2 for Graf).
CLAY COURTS: MONICA SELES.
Seles was the better player on clay:
1990 French Open
1991 French Open
1992 French Open
INDOOR: MONICA SELES.
Seles won the biggest indoor event in 1990, 1991 and 1992:
1990 Tour Championships
1991 Tour Championships
1992 Tour Championships
HARDCOURTS: MONICA SELES.
Seles was the better player on hardcourts because she won the 2 biggest events on hardcourts 5 straight times:
1991 Australian
1991 U.S. Open
1992 Australian
1992 U.S. Open
1993 Australian
GRASS COURTS: STEFFI GRAF.
Graf won Wimbledon in 1991 and 1992 when Seles did not play the event in 1991 and she made the final round of 1992 ... so Graf has the better record on grass.
HARDCOURTS: SELES
INDOORS: SELES
CLAY: SELES
GRASS: GRAF
CUMULATIVE May 1990 - April 1993 until stabbing:
Seles: 201-16 (92.63%) ... 29 titles.
Graf: 200-22 (88.50%) ... 24 titles.
BY SURFACE:
Hardcourts May 1990 - April 1993 until stabbing:
Seles: 98-8 match record (92.45%) .. 13 titles
Graf: 66-9 match record (88.00%) .. 5 titles
Clay May 1990 - April 1993 until stabbing:
Seles: 57-4 match record (93.44%) .. 8 titles
Graf: 58-7 match record (89.23%) .. 5 titles
Grass May 1990 - April 1993 until stabbing:
Seles: 10-2 match record (83.33%) .. no titles
Graf: 19-1 match record (95.00%) .. 2 titles
Indoor Carpet May1990 - April 1993 until stabbing:
Seles: 36-2 match record (94.74%) ... 8 titles
Graf: 57-5 match record (91.94%) ... 12 titles
#1 Ranking
Monica Seles Mar 11, 1991 - Aug 04, 1991 (21 weeks)
Steffi Graf Aug 05, 1991 - Aug 11, 1991 (1 week)
Monica Seles Aug 12, 1991 - Aug 18, 1991 (1 week)
Steffi Graf Aug 19, 1991 - Sep 08, 1991 (3 weeks)
Monica Seles Sep 09, 1991 - Jun 06, 1993 (91 weeks)