What is VOPO in tennis betting?

VOPO (Value Over Pinnacle Odds) is the difference between Tennis Glicko's internal win probability (average of Glicko-2 and Elo models) and the implied probability from Pinnacle's odds. A positive VOPO means the market is undervaluing a player.

What is Green EV in tennis betting?

Green EV is Tennis Glicko's high-conviction value signal. It triggers when VOPO exceeds 12% AND the internal win probability is above 50% — indicating the market is significantly mispricing a player.

How accurate is Tennis Glicko?

Tennis Glicko has 72.8% predictive accuracy over the last 30 days, with a Brier Score of 0.1775 — a standard probabilistic calibration metric used in forecasting.

Why use Glicko-2 instead of ATP rankings for tennis predictions?

ATP rankings are a lagging indicator — they ignore surface specialization, injury returns, scheduling fatigue, and form swings. Glicko-2 updates after every match, adjusts for opponent quality, and models rating uncertainty, making it significantly more accurate for predicting match outcomes.

Women's
Rankings.

UPDATED: JULY 24, 2026 AT 03:15 AM UTC

Rank	Player	Recent Form	Glicko Pts	RD	Hard	Clay	Grass
#1	Aryna Sabalenka-Hot	L W W W L	2.351(#1)	77	2.473(#1)	2.283(#7)	1.922(#7)
#2▲4	Cori Gauff-Hot	W W W W L	2.264(#2)	67	2.232(#5)	2.316(#3)	1.904(#8)
#3▲6	Jessica Pegula-Hot	W W W W L	2.261(#3)	69	2.263(#3)	2.223(#10)	1.969(#2)
#4▲21	Marta Kostyuk-Hot	W W W W L	2.261(#4)	71	2.120(#13)	2.469(#1)	1.904(#9)
#5▲5	Elena Rybakina-	W L W W L	2.258(#5)	72	2.359(#2)	2.293(#5)	1.764(#30)
#6▲6	Karolina Muchova-Hot	W W L W L	2.246(#6)	65	2.241(#4)	2.172(#14)	1.940(#6)
#7▲29	Linda Noskova-Hot	W W W W W	2.221(#7)	64	2.121(#12)	2.062(#37)	2.092(#1)
#8▼5	Mirra Andreeva-	W W L W L	2.215(#8)	67	2.105(#15)	2.451(#2)	1.618(#90)
#9▼7	Iga Swiatek-	L L W W L	2.201(#9)	71	2.202(#7)	2.271(#8)	1.855(#16)
#10▲9	Naomi Osaka-Hot	W W W W L	2.193(#10)	71	2.107(#14)	2.239(#9)	1.880(#12)
#11	Belinda Bencic-Hot	L W W W L	2.181(#11)	71	2.167(#10)	2.164(#15)	1.813(#23)
#12▼8	Madison Keys-Hot	W W W W L	2.172(#12)	66	2.076(#18)	2.152(#18)	1.947(#5)
#13▲57	Sorana Cirstea-Hot	W L W W L	2.164(#13)	67	2.136(#11)	2.284(#6)	1.609(#97)
#14▲33	Victoria Mboko-	L W W L L	2.156(#14)	71	2.223(#6)	2.090(#32)	1.422(#2250)
#15▲3	Amanda Anisimova-	W L W W L	2.139(#15)	79	2.186(#9)	1.979(#76)	1.839(#19)
#16▲16	Barbora Krejcikova-63Hot	W W W W W	2.132(#16)	70	2.192(#8)	1.967(#87)	1.838(#20)
#17▲13	Marketa Vondrousova-	W L L L W	2.100(#17)	89	2.043(#27)	2.094(#31)	1.963(#3)
#18▼1	Elise Mertens-Hot	W W W W L	2.098(#18)	67	2.035(#31)	2.052(#41)	1.861(#15)
#19▲29	Iva Jovic-Hot	L W W W L	2.092(#19)	64	2.041(#28)	1.986(#73)	1.959(#4)
#20▲32	Anna Kalinskaya-Rising	W L W W L	2.084(#20)	68	2.059(#22)	2.145(#19)	1.684(#58)
#21▲59	Marie Bouzkova-Hot	W W L W W	2.081(#21)	66	2.037(#29)	2.119(#27)	1.843(#18)
#22▲73	Karolina Pliskova-	W W L W L	2.080(#22)	71	1.904(#112)	2.135(#23)	1.703(#49)
#23▼8	Jasmine Paolini-Hot	W W W W L	2.074(#23)	71	2.063(#20)	2.024(#51)	1.881(#11)
#24▼3	Anastasia Potapova-	L W L L L	2.061(#24)	68	1.924(#96)	2.307(#4)	1.461(#2205)
#25▼11	Paula Badosa Gibert-72Hot	W W L W W	2.055(#25)	66	1.978(#55)	2.179(#12)	1.619(#88)
#26▲14	Diana Shnaider-	L L L W L	2.052(#26)	69	2.011(#38)	2.173(#13)	1.479(#2191)
#27▼1	Emma Navarro-	W L W W L	2.047(#27)	63	1.857(#163)	2.047(#45)	1.776(#27)
#28▲6	Sonay Kartal-	L W W W L	2.047(#28)	69	2.037(#30)	1.776(#308)	1.726(#43)
#29▼6	Jelena Ostapenko-Rising	W L W W L	2.044(#29)	68	1.952(#66)	2.145(#20)	1.783(#24)
#30▲136	Daria Snigur-Hot	W W L W W	2.039(#30)	67	2.049(#26)	1.989(#70)	1.758(#32)
#31▲74	Hailey Baptiste-	L W L W L	2.036(#31)	70	1.961(#60)	2.133(#24)	1.493(#2174)
#32▲115	Anhelina Kalinina-	L L L W W	2.031(#32)	66	1.922(#99)	2.184(#11)	1.518(#159)
#33▲224	Xiyu Wang-	W W L W L	2.030(#33)	66	2.028(#34)	2.108(#29)	1.467(#2199)
#34▼18	Qinwen Zheng-	L L W W L	2.024(#34)	77	2.060(#21)	2.139(#22)	1.446(#2221)
#35▲130	Maja Chwalinska-	W W W L L	2.022(#35)	68	1.937(#79)	2.140(#21)	1.311(#2376)
#36▼1	Ashlyn Krueger-Hot	W W W W L	2.021(#36)	62	1.856(#164)	1.908(#139)	1.865(#14)
#37▲50	Caty McNally-	W W L W L	2.020(#37)	66	1.928(#87)	2.062(#38)	1.727(#42)
#38▲22	Elena Gabriela Ruse-	W W L L L	2.015(#38)	68	1.906(#108)	1.939(#116)	1.850(#17)
#39▲101	Mayar Sherif-77Hot	W W W W W	2.014(#39)	59	1.460(#1453)	2.120(#26)	1.209(#2410)
#40▼16	Tereza Valentova-43	W W L W W	2.014(#40)	70	2.095(#16)	2.029(#47)	1.572(#114)
#41▲14	Katerina Siniakova-	W L L W L	2.013(#41)	70	2.010(#40)	1.949(#103)	1.732(#40)
#42▲34	Maria Sakkari-34Hot	W W W W L	2.010(#42)	68	2.069(#19)	1.998(#62)	1.550(#128)
#43▼14	Emma Raducanu-	W W W W L	2.007(#43)	75	1.949(#69)	1.859(#193)	1.831(#21)
#44▲28	Taylor Townsend-	L L W L L	2.003(#44)	77	2.022(#36)	1.987(#71)	1.546(#133)
#45▲91	Nikola Bartunkova-41Hot	W W L W L	2.002(#45)	67	1.943(#73)	2.005(#58)	1.733(#39)
#46▲31	Jaqueline Cristian-	L L W L L	2.000(#46)	72	2.027(#35)	1.957(#97)	1.410(#2261)
#47▼4	Katie Boulter-	W W L L L	1.998(#47)	69	1.988(#48)	1.902(#144)	1.655(#68)
#48▲37	Katie Volynets-Hot	W W W W L	1.998(#48)	61	1.954(#63)	1.994(#63)	1.756(#33)
#49▲102	Mananchaya Sawangkaew-Hot	W W L W W	1.997(#49)	65	1.955(#62)	1.567(#780)	1.718(#44)
#50▼13	Mccartney Kessler-	W W L W L	1.997(#50)	67	1.982(#53)	1.923(#125)	1.625(#85)

Women's Rankings.

Women's
Rankings.