Mary Lou Piatek-Daniels

Where the 1427.2 rating comes from

From 30 matches played between 5 February 1990 and 22 February 1993, and from them alone. Every line below was written at computation time: nothing is recomputed to show this page.

How to read this

On the right: the change this match produced, then the value before → after. A line's arrival value is the next line's starting value, down to the starting rating given to every newcomer. A ±0.0 is a counted match that did not move the rating, a walkover for instance.

30 matches, from the most recent to the first

22/02/93 · WTA 1000 1993 · First round · detail
−11.31438.5 → 1427.2
beaten by Linda Harvey-Wild 0–2
09/11/92 · WTA 1000 1992 · First round · detail
−8.01446.5 → 1438.5
beaten by Carrie Cunningham 1–2
31/08/92 · WTA Grand Slam 1992 · First round · detail
−9.61456.1 → 1446.5
22/06/92 · WTA Grand Slam 1992 · First round · detail
−2.41458.5 → 1456.1
30/03/92 · WTA 1000 1992 · First round · detail
+15.91442.6 → 1458.5
30/03/92 · WTA 1000 1992 · Second round · detail
−2.51445.1 → 1442.6
beaten by Donna Faber 0–2
09/03/92 · WTA 1000 1992 · First round · detail
−11.41456.5 → 1445.1
beaten by Jennifer Santrock 1–2
24/02/92 · WTA 1000 1992 · First round · detail
−12.81469.3 → 1456.5
beaten by Erika deLone 1–2
17/02/92 · WTA 1000 1992 · First round · detail
−14.31483.6 → 1469.3
beaten by Catarina Lindqvist 0–2
13/01/92 · WTA Grand Slam 1992 · First round · detail
−9.41493.0 → 1483.6
beaten by Sabine Appelmans 0–2
04/11/91 · WTA 1000 1991 · Quarterfinals · detail
−6.11499.2 → 1493.0
beat Helen Kelesi 2–0
04/11/91 · WTA 1000 1991 · First round · detail
+16.01483.2 → 1499.2
beat Cristina Tessi 2–0
04/11/91 · WTA 1000 1991 · Second round · detail
+10.81472.4 → 1483.2
beaten by Gigi Fernandez 1–2
15/04/91 · WTA 1000 1991 · First round · detail
−9.11481.5 → 1472.4
beaten by Audra Keller 1–2
01/04/91 · WTA 1000 1991 · First round · detail
−13.51495.0 → 1481.5
beaten by Gretchen Magers 0–2
18/03/91 · WTA 1000 1991 · Second round · detail
−12.21507.2 → 1495.0
beat Camille Benjamin 2–1
18/03/91 · WTA 1000 1991 · First round · detail
+9.81497.3 → 1507.2
beaten by Meredith McGrath 0–2
04/03/91 · WTA 1000 1991 · First round · detail
−9.71507.1 → 1497.3
beaten by Zina Garrison-Jackson 0–2
29/10/90 · WTA 1000 1990 · Second round · detail
−6.71513.7 → 1507.1
beat Monique Javer 2–1
29/10/90 · WTA 1000 1990 · First round · detail
+11.81502.0 → 1513.7
beat Cammy MacGregor 2–0
02/04/90 · WTA 1000 1990 · First round · detail
+23.01479.0 → 1502.0
beaten by Arantxa Sánchez Vicario 0–2
02/04/90 · WTA 1000 1990 · Second round · detail
−20.11499.1 → 1479.0
beat Sylvia Hanika 2–0
25/03/90 · WTA 1000 1990 · First round · detail
+22.51476.6 → 1499.1
beaten by Arantxa Sánchez Vicario 0–2
25/03/90 · WTA 1000 1990 · Quarterfinals · detail
−22.21498.9 → 1476.6
beaten by Jennifer Capriati 0–2
05/03/90 · WTA 1000 1990 · First round · detail
−20.51519.4 → 1498.9
beat Wendy White 2–0
19/02/90 · WTA 1000 1990 · First round · detail
+22.41496.9 → 1519.4
beaten by Anne Minter 1–2
19/02/90 · WTA 1000 1990 · Second round · detail
−30.11527.0 → 1496.9
beat Gretchen Rush 2–0
05/02/90 · WTA 1000 1990 · Second round · detail
+23.81503.2 → 1527.0
beaten by Dianne Van Rensburg 1–2
05/02/90 · WTA 1000 1990 · Quarterfinals · detail
−20.81524.0 → 1503.2
beat Andrea Vieira 2–0
05/02/90 · WTA 1000 1990 · First round · detail
+24.01500.0 → 1524.0

Only the matches the source publishes appear; what is missing is listed. The source gives the day, not the hour: two matches on the same day are ordered by a reproducible rule, which is not necessarily the real order.