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Heather Siersma

Royal Oak, MI
4.0C year-end 2025
i
Computer — generated by the USTA algorithm from match play
131 matches · 45W–86L · seasons 2019–2026

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Match history131 matches
L
2026-07-14 · DCD- Siersma 18s 4.0 NW F1 · #1 Doubles · 4.0 · with Riya Cao
expectation pending — we’re still fetching an opponent’s record
6-4, 1-6, 0-1
L
2026-07-07 · DCD- Siersma 18s 4.0 NW F1 · #2 Doubles · 4.0 · with Carter Drewry
expectation pending — we’re still fetching an opponent’s record
7-5, 1-6, 0-1
W
Leslie Schneemann / Susan Scott
2026-06-23 · DCD- Siersma 18s 4.0 NW F1 · #2 Doubles · 4.0 · with Nadia Alchy
expectation pending — we’re still fetching an opponent’s record
7-6, 6-4
L
2026-06-13 · DCD- Siersma 18s 4.0 NW F1 · #2 Doubles · 4.0 · with Hillary Morris
expectation pending — we’re still fetching an opponent’s record
2-6, 2-6
L
2026-05-30 · DCD- Siersma 18s 4.0 NW F1 · #2 Doubles · 4.0 · with Hillary Morris
expectation pending — we’re still fetching an opponent’s record
2-6, 6-2, 0-1
W
2026-02-28 · #1 Doubles · 8.0 · with MacIej Pietrowicz mixed
doesn’t count toward your NTRP rating
6-2, 6-2
L
2025-12-14 · 3BEV- Besecke 75 WOMEN COMBO F2 · #2 Doubles · 7.5 · with Meredith Flynn
doesn’t count toward your NTRP rating
1-6, 2-6
W
2025-11-08 · 3BEV- Besecke 75 WOMEN COMBO F2 · #2 Doubles · 7.5 · with Hillary Morris
doesn’t count toward your NTRP rating
6-3, 7-6
L
2025-11-02 · 3BEV- Besecke 75 WOMEN COMBO F2 · #2 Doubles · 7.5 · with Laura Zapytowski
doesn’t count toward your NTRP rating
2-6, 3-6
L
2025-10-26 · 3BEV- Besecke 75 WOMEN COMBO F2 · #1 Doubles · 7.5 · with Hillary Morris
doesn’t count toward your NTRP rating
2-6, 3-6
L
2025-10-04 · 3BEV- Besecke 75 WOMEN COMBO F2 · #3 Doubles · 7.5 · with Meredith Flynn
doesn’t count toward your NTRP rating
4-6, 1-6
L
2025-07-09 · 1DCD-SIERSMA 40NW TU 18&O SEM F1 · #1 Doubles · 4.0 · with Rhiannon Laforest
expectation pending — we’re still fetching an opponent’s record
4-6, 2-6
Where you rank locallyagainst everyone at your level
Teams22 teams · 2021–2026
Over timerating by season, and how you rank
By level5 levels played
3.5
72.4%
21W–8L · 56.6% of games
4.0
17.4%
8W–38L · 40.7% of games
7.5
42.3%
11W–15L · 46.9% of games
7.0mixed
0W–3L
not enough matches yet
8.0mixed
11.8%
2W–15L · 33.6% of games

Games won matters more than matches won — NTRP adjusts on margins.

By lineusually #2 Doubles, 39% of the time
#2 Doubles
39%
51 matches
#1 Doubles
37%
48 matches
#3 Doubles
18%
24 matches
#2 Singles
3%
4 matches
#1 Singles
2%
2 matches
#3 Singles
2%
2 matches

How often, across every team and every match we hold — including ones that do not count toward a rating. Advanced stats has a court-position table too, and it answers a different question: how well you do there, over matches that count. A team’s own page shows how that one team uses you.

Not affiliated with or endorsed by the USTA. Ratings labelled as published are USTA year-end figures; anything we describe as an estimate is ours, not USTA’s. Match data is from USTA TennisLink.

What matters isn’t how well you play when you’re playing well. What matters is how well you play when you’re playing badly.
Martina Navratilova