Tiebreak record — full ATP & WTA ranking

Leader

Nina Vargova

77.3% of tiebreaks won

Average: 50.2%
Std. dev.: 10.1
Leader sits at: 2.7σ
Range: 12.0 … 77.3

353 players

#	Player	Value	Pctl	Sample
1	NV Nina Vargova	77.3%	100.0	22
2	DG Denislava Glushkova	75.0%	99.7	28
3	AR Amelia Rajecki	70.8%	99.4	24
4	Petra Marcinko#53	70.0%	99.1	30
5	Lois Boisson	70.0%	98.9	20
6	Irene Burillo Escorihuela	69.7%	98.6	33
7	Taylah Preston#106	69.7%	98.3	33
8	GP Georgia Pedone	69.6%	98.0	23
9	Elena Ruxandra Bertea	68.6%	97.7	35
10	CA Carolyn Ansari	68.2%	97.4	22
11	TS Tina Nadine Smith	68.0%	97.2	25
12	Elena Micic	67.9%	96.9	28
13	Janice Tjen#36	67.6%	96.6	37
14	AZ Anastasia Zolotareva	67.4%	96.3	43
15	TB Tessa Johanna Brockmann	66.0%	96.0	47
16	Francesca Jones#107	65.5%	95.7	29
17	MS Mika Stojsavljevic	65.4%	95.5	26
18	Emerson Jones#134	65.2%	95.2	23
19	MT Maria Toma	65.2%	94.9	23
20	YK Yasmine Kabbaj	65.2%	94.6	23
21	SA Shiho Akita	65.0%	94.3	20
22	ZK Zhibek Kulambayeva	65.0%	94.0	20
23	SS Sapfo Sakellaridi	64.7%	93.8	34
24	GC Gabriela Cé	64.5%	93.5	31
25	SC Sara Cakarevic	64.5%	93.2	31
26	LK Linda Klimovicova	64.3%	92.9	28
27	Mary Stoiana#127	64.3%	92.6	28
28	Xiaodi You	64.3%	92.3	28
29	CZ Chenting Zhu	63.6%	92.0	22
30	EC Enola Chiesa	63.6%	91.8	22
31	TA Tessah Andrianjafitrimo	63.6%	91.5	22
32	AP Andreea Prisacariu	63.3%	91.2	30
33	Kayla Cross	63.3%	90.9	30
34	ML Manon Leonard	63.3%	90.6	30
35	AS Anja Stankovic	63.0%	90.3	27
36	GX Gao Xinyu	63.0%	90.1	27
37	AS Ana Sofia Sanchez	62.9%	89.8	35
38	Hanyu Guo	62.5%	89.5	24
39	PT Patricia Maria Tig	62.5%	89.2	24
40	VB Victoria Bosio	62.5%	88.9	24
41	Aliona Falei	62.1%	88.6	29
42	SN BDISada Nahimana	61.9%	88.4	21
43	SS Samira De Stefano	61.9%	88.1	21
44	Tamara Zidansek#146	61.8%	87.8	55
45	ES Ena Shibahara	61.7%	87.5	47
46	Mananchaya Sawangkaew#109	61.3%	87.2	31
47	Darja Semenistaja#112	61.1%	86.9	36
48	Julie Struplova	61.1%	86.6	36
49	Mayar Sherif#50	60.9%	86.4	46
50	EA Eva Guerrero Alvarez	60.9%	86.1	23

How this is calculated

Minimum 20 tiebreaks played. Below that the figure is noise and publishing it would be faking precision. Each family of metrics carries its own counter — 200 matches is not 200 tiebreaks.
Window. Five years of results. These rows need only the scoreline, which exists far further back than serve statistics do.
One division at a time. A player belongs to the Challenger/ITF division when more than half of their matches since 2024 are played there. Mixing the two ranks schedules rather than players: the raw list of closers was headed by an ITF player at 100% over twenty matches.
Not a betting signal. It describes a player, not a price. Our own prediction engine is measured against the market and loses: 0.632 log loss against 0.593.

Leader

Nina Vargova

77.3% of tiebreaks won

Average: 50.2%
Std. dev.: 10.1
Leader sits at: 2.7σ
Range: 12.0 … 77.3

353 players

#	Player	Value	Pctl	Sample
1	NV Nina Vargova	77.3%	100.0	22
2	DG Denislava Glushkova	75.0%	99.7	28
3	AR Amelia Rajecki	70.8%	99.4	24
4	Petra Marcinko#53	70.0%	99.1	30
5	Lois Boisson	70.0%	98.9	20
6	Irene Burillo Escorihuela	69.7%	98.6	33
7	Taylah Preston#106	69.7%	98.3	33
8	GP Georgia Pedone	69.6%	98.0	23
9	Elena Ruxandra Bertea	68.6%	97.7	35
10	CA Carolyn Ansari	68.2%	97.4	22
11	TS Tina Nadine Smith	68.0%	97.2	25
12	Elena Micic	67.9%	96.9	28
13	Janice Tjen#36	67.6%	96.6	37
14	AZ Anastasia Zolotareva	67.4%	96.3	43
15	TB Tessa Johanna Brockmann	66.0%	96.0	47
16	Francesca Jones#107	65.5%	95.7	29
17	MS Mika Stojsavljevic	65.4%	95.5	26
18	Emerson Jones#134	65.2%	95.2	23
19	MT Maria Toma	65.2%	94.9	23
20	YK Yasmine Kabbaj	65.2%	94.6	23
21	SA Shiho Akita	65.0%	94.3	20
22	ZK Zhibek Kulambayeva	65.0%	94.0	20
23	SS Sapfo Sakellaridi	64.7%	93.8	34
24	GC Gabriela Cé	64.5%	93.5	31
25	SC Sara Cakarevic	64.5%	93.2	31
26	LK Linda Klimovicova	64.3%	92.9	28
27	Mary Stoiana#127	64.3%	92.6	28
28	Xiaodi You	64.3%	92.3	28
29	CZ Chenting Zhu	63.6%	92.0	22
30	EC Enola Chiesa	63.6%	91.8	22
31	TA Tessah Andrianjafitrimo	63.6%	91.5	22
32	AP Andreea Prisacariu	63.3%	91.2	30
33	Kayla Cross	63.3%	90.9	30
34	ML Manon Leonard	63.3%	90.6	30
35	AS Anja Stankovic	63.0%	90.3	27
36	GX Gao Xinyu	63.0%	90.1	27
37	AS Ana Sofia Sanchez	62.9%	89.8	35
38	Hanyu Guo	62.5%	89.5	24
39	PT Patricia Maria Tig	62.5%	89.2	24
40	VB Victoria Bosio	62.5%	88.9	24
41	Aliona Falei	62.1%	88.6	29
42	SN BDISada Nahimana	61.9%	88.4	21
43	SS Samira De Stefano	61.9%	88.1	21
44	Tamara Zidansek#146	61.8%	87.8	55
45	ES Ena Shibahara	61.7%	87.5	47
46	Mananchaya Sawangkaew#109	61.3%	87.2	31
47	Darja Semenistaja#112	61.1%	86.9	36
48	Julie Struplova	61.1%	86.6	36
49	Mayar Sherif#50	60.9%	86.4	46
50	EA Eva Guerrero Alvarez	60.9%	86.1	23

How this is calculated

Minimum 20 tiebreaks played. Below that the figure is noise and publishing it would be faking precision. Each family of metrics carries its own counter — 200 matches is not 200 tiebreaks.
Window. Five years of results. These rows need only the scoreline, which exists far further back than serve statistics do.
One division at a time. A player belongs to the Challenger/ITF division when more than half of their matches since 2024 are played there. Mixing the two ranks schedules rather than players: the raw list of closers was headed by an ITF player at 100% over twenty matches.
Not a betting signal. It describes a player, not a price. Our own prediction engine is measured against the market and loses: 0.632 log loss against 0.593.