Goalie Z-Score

Dominik Hasek is (as expected) by this metric the most dominant regular season goalie ever, with 7 straight seasons in Top 100. Although Hasek's...
Rating:
5/5,
1. Hi there,

I've compiled the data about goalies regular season Z-Score (# of standard deviations above the mean), because I couldn't find it on the internet or here on forums (it seems that some data was lost in migration). Z-Score is IMHO the best tool for measuring goalie dominance over his peers.

Data:
nhl.com

Method:
Calculate season weighted (goalies facing more games are more significant to the result) mean sv%, measured goalie excluded:

X' = Sum1..N(Wi * Xi)/Sum1..N(Wi)

Xi - Save percentage
Wi - Shots against
N - number of goalies playing at least one game, measured goalie excluded

Calculate season weighted standard deviation. Again measured goalie excluded:

SD = sqrt(Sum1..N(Wi * (Xi - X')^2) / (((N-1)/N) * Sum1..N(Wi)))

X' - Weighted mean
Xi - Save percentage
Wi - Shots against
N - number of goalies playing at least one game, measured goalie excluded

Calculate goalie Z-Score

Z-Score = (X - X') / SD

X - goalie Sv%
X' - weighted mean Sv%
SD - weighted standard deviation

Season data:
 Season Number of Goalies Mean Standard deviation Goalies with Top 100 seasons 1955-1956 13 0.9191 0.01316 1956-1957 10 0.9112 0.01204 Glenn Hall 1957-1958 14 0.9086 0.01556 1958-1959 16 0.9055 0.01402 Jacques Plante 1959-1960 15 0.9076 0.01507 1960-1961 14 0.9079 0.01402 1961-1962 14 0.9059 0.01746 1962-1963 15 0.9078 0.00978 Glenn Hall 1963-1964 15 0.9162 0.01319 Johnny Bower 1964-1965 12 0.9085 0.01166 Glenn Hall 1965-1966 19 0.9042 0.01757 1966-1967 19 0.9069 0.01484 1967-1968 31 0.9095 0.01473 Johnny Bower, Bruce Gamble 1968-1969 38 0.9082 0.01439 Glenn Hall 1969-1970 34 0.9119 0.01226 Tony Esposito 1970-1971 41 0.9032 0.01898 Jacques Plante 1971-1972 41 0.9025 0.01899 Tony Esposito, Ken Dryden 1972-1973 45 0.8959 0.0175 Ken Dryden 1973-1974 49 0.8959 0.01974 Tony Esposito, Bernie Parent 1974-1975 51 0.8903 0.02046 Rogie Vachon, Bernie Parent 1975-1976 53 0.8898 0.01904 Glenn Resch, Ken Dryden 1976-1977 53 0.8906 0.01758 Glenn Resch, Ken Dryden 1977-1978 53 0.8888 0.01927 Tony Esposito, Ken Dryden 1978-1979 50 0.8825 0.01997 Glenn Resch, Ken Dryden, Mike Palmateer 1979-1980 69 0.8824 0.01584 Tony Esposito 1980-1981 70 0.8761 0.01849 1981-1982 66 0.8729 0.0182 Grant Fuhr, Billy Smith 1982-1983 67 0.8754 0.01829 Billy Smith, Pete Peeters, Murray Bannerman, Roland Melanson 1983-1984 69 0.8732 0.01767 Billy Smith 1984-1985 66 0.8746 0.01533 Pelle Lindbergh 1985-1986 68 0.8741 0.01894 Bob Froese, Kelly Hrudey 1986-1987 63 0.8798 0.0136 Ron Hextall 1987-1988 63 0.8796 0.01317 Patrick Roy, Kelly Hrudey 1988-1989 67 0.8790 0.01447 Jon Casey, Mike Vernon, Patrick Roy 1989-1990 70 0.8807 0.01705 Daren Puppa, Patrick Roy 1990-1991 77 0.8860 0.0160 Patrick Roy, Ed Belfour 1991-1992 73 0.8881 0.0141 Curtis Joseph, Bob Essensa, John Vanbiesbrouck, Patrick Roy 1992-1993 71 0.8849 0.01558 Curtis Joseph, Ed Belfour, Felix Potvin 1993-1994 79 0.8950 0.01876 John Vanbiesbrouck, Dominik Hasek 1994-1995 68 0.9005 0.01433 Dominik Hasek 1995-1996 78 0.8984 0.01582 Daren Puppa, Dominik Hasek 1996-1997 76 0.9047 0.01475 Jeff Hackett, Dominik Hasek, Martin Brodeur, Patrick Roy 1997-1998 73 0.9062 0.0124 Tom Barrasso, Dominik Hasek 1998-1999 85 0.9077 0.0132 Byron Dafoe, Ron Tugnutt, Dominik Hasek 1999-2000 83 0.9043 0.0137 2000-2001 88 0.9032 0.01428 Sean Burke, Roman Cechmanek, Mike Dunham 2001-2002 89 0.9077 0.01159 Patrick Roy, Jose Theodore 2002-2003 91 0.9088 0.01428 Marty Turco, Dwayne Roloson 2003-2004 94 0.9109 0.01328 Dwayne Roloson, Roberto Luongo 2005-2006 89 0.9012 0.01436 Henrik Lundqvist, Miikka Kiprusoff, Manny Fernandez, Tomas Vokoun, Dominik Hasek 2006-2007 84 0.9052 0.01399 Niklas Backstrom, Chris Mason 2007-2008 89 0.9091 0.01328 2008-2009 89 0.9084 0.01296 Tomas Vokoun, Tim Thomas 2009-2010 83 0.9112 0.01162 Tuukka Rask, Ryan Miller 2010-2011 87 0.9128 0.01362 Tim Thomas, Pekka Rinne 2011-2012 88 0.9135 0.01233 Mike Smith, Henrik Lundqvist, Jonathan Quick 2012-2013 82 0.9119 0.01412 2013-2014 97 0.9138 0.01302 Tuukka Rask 2014-2015 92 0.9146 0.01312 Carey Price 2015-2016 92 0.9148 0.01054 Brian Elliott 2016-2017 94 0.9134 0.01162 Sergei Bobrovsky 2017-2018 95 0.9122 0.01195 Marc-Andre Fleury, Antti Raanta, Pekka Rinne
Seasonal data (minimum 40 games):
 # Name Season S% GP Z-Score Awards 1 Dominik Hasek 1998-1999 0.9366 64 2.4150 Vezina 2 Jacques Plante 1970-1971 0.9437 40 2.4050 3 Dominik Hasek 1994-1995 0.9303 41 2.2944 Vezina 4 Dominik Hasek 1997-1998 0.9315 72 2.2749 Hart, Vezina, Pearson 5 Jose Theodore 2001-2002 0.9310 67 2.1778 Hart, Vezina 6 Ken Dryden 1975-1976 0.9266 62 2.1320 Retro Vezina 7 Glenn Resch 1975-1976 0.9275 44 2.1279 8 Patrick Roy 1988-1989 0.9078 48 2.1212 Vezina, Jennings 9 Bernie Parent 1973-1974 0.9322 73 2.1013 Retro Vezina 10 Glenn Hall 1956-1957 0.9280 70 2.0830 11 Patrick Roy 1991-1992 0.9141 67 1.9992 Vezina, Jennings 12 Tim Thomas 2008-2009 0.9327 54 1.9760 Vezina, Jennings 13 Tim Thomas 2010-2011 0.9381 57 1.9648 Vezina 14 Patrick Roy 1989-1990 0.9119 54 1.9603 Vezina 15 Rogie Vachon 1974-1975 0.9269 54 1.9558 16 Dominik Hasek 1993-1994 0.9297 58 1.9533 Vezina, Jennings 17 Roland Melanson 1982-1983 0.9092 44 1.9522 Jennings 18 Bob Froese 1985-1986 0.9086 51 1.9296 Jennings 19 Jacques Plante 1958-1959 0.9251 67 1.9204 Retro Vezina 20 Ken Dryden 1972-1973 0.9264 54 1.9132 Retro Vezina 21 Bruce Gamble 1967-1968 0.9343 41 1.8728 22 Tony Esposito 1969-1970 0.9318 63 1.8695 Retro Vezina 23 Tony Esposito 1973-1974 0.9286 70 1.8497 Retro Vezina 24 Johnny Bower 1967-1968 0.9341 43 1.8470 25 Dominik Hasek 1996-1997 0.9297 67 1.8220 Hart, Vezina, Pearson 26 Ken Dryden 1977-1978 0.9215 52 1.8160 Retro Vezina 27 Curtis Joseph 1992-1993 0.9109 68 1.7984 28 Tuukka Rask 2009-2010 0.9312 45 1.7780 29 Tony Esposito 1971-1972 0.9339 48 1.7766 Retro Vezina 30 Kelly Hrudey 1985-1986 0.9057 45 1.7654 31 Ken Dryden 1976-1977 0.9196 56 1.7651 Retro Vezina 32 Billy Smith 1982-1983 0.9059 41 1.7453 Jennings 33 Niklas Backstrom 2006-2007 0.9289 41 1.7406 Jennings 34 Pelle Lindbergh 1984-1985 0.8992 65 1.7294 Vezina 35 Ron Hextall 1986-1987 0.9015 66 1.7217 Vezina 36 Dominik Hasek 2005-2006 0.9251 43 1.7186 37 Marty Turco 2002-2003 0.9323 55 1.7119 38 Dwayne Roloson 2003-2004 0.9327 48 1.7017 39 Curtis Joseph 1991-1992 0.9103 60 1.6830 40 Glenn Resch 1978-1979 0.9141 43 1.6769 41 Bob Essensa 1991-1992 0.9104 47 1.6602 42 Felix Potvin 1992-1993 0.9097 48 1.6595 43 John Vanbiesbrouck 1993-1994 0.9241 57 1.6311 44 Sergei Bobrovsky 2016-2017 0.9314 63 1.6237 Vezina 45 John Vanbiesbrouck 1991-1992 0.9098 45 1.6044 46 Ken Dryden 1971-1972 0.9300 64 1.6043 47 Pete Peeters 1982-1983 0.9032 63 1.6036 Vezina 48 Patrick Roy 1987-1988 0.8998 45 1.6012 Jennings 49 Ed Belfour 1990-1991 0.9097 74 1.5852 Vezina, Jennings 50 Glenn Resch 1976-1977 0.9170 46 1.5794 51 Roberto Luongo 2003-2004 0.9305 72 1.5667 52 Ryan Miller 2009-2010 0.9285 69 1.5621 Vezina 53 Patrick Roy 2001-2002 0.9251 63 1.5613 Jennings 54 Miikka Kiprusoff 2005-2006 0.9226 74 1.5598 Vezina, Jennings 55 Martin Brodeur 1996-1997 0.9265 67 1.5444 Jennings 56 Antti Raanta 2017-2018 0.9301 47 1.5409 57 Jeff Hackett 1996-1997 0.9265 41 1.5234 58 Jon Casey 1988-1989 0.8997 55 1.4977 59 Carey Price 2014-2015 0.9334 66 1.4948 Hart, Vezina, Jennings, Ted Linday 60 Glenn Hall 1968-1969 0.9283 41 1.4865 Retro Vezina 61 Henrik Lundqvist 2005-2006 0.9218 53 1.4794 62 Chris Mason 2006-2007 0.9252 40 1.4729 63 Brian Elliott 2015-2016 0.9299 42 1.4647 64 Byron Dafoe 1998-1999 0.9261 68 1.4547 65 Glenn Hall 1964-1965 0.9230 41 1.4545 66 Murray Bannerman 1982-1983 0.9008 41 1.4456 67 Bernie Parent 1974-1975 0.9181 68 1.4402 Retro Vezina 68 Grant Fuhr 1981-1982 0.8978 48 1.4332 69 Billy Smith 1981-1982 0.8979 46 1.4300 Vezina 70 Mike Palmateer 1978-1979 0.9091 58 1.4284 71 Tony Esposito 1977-1978 0.9144 64 1.4276 72 Dominik Hasek 1995-1996 0.9199 59 1.4250 73 Mike Smith 2011-2012 0.9303 67 1.4228 74 Johnny Bower 1963-1964 0.9319 51 1.4081 75 Ed Belfour 1992-1993 0.9058 71 1.4063 Vezina, Jennings 76 Ken Dryden 1978-1979 0.9092 47 1.3961 Retro Vezina 77 Mike Dunham 2000-2001 0.9225 48 1.3928 78 Tomas Vokoun 2008-2009 0.9256 59 1.3731 79 Henrik Lundqvist 2011-2012 0.9298 62 1.3684 Vezina 80 Ron Tugnutt 1998-1999 0.9253 43 1.3658 81 Tony Esposito 1979-1980 0.9027 69 1.3611 82 Daren Puppa 1989-1990 0.9029 56 1.3607 83 Sean Burke 2000-2001 0.9219 62 1.3591 84 Billy Smith 1983-1984 0.8962 42 1.3489 85 Roman Cechmanek 2000-2001 0.9214 59 1.3127 86 Tomas Vokoun 2005-2006 0.9193 61 1.3069 87 Daren Puppa 1995-1996 0.9183 57 1.3003 88 Patrick Roy 1996-1997 0.9231 62 1.3001 89 Patrick Roy 1990-1991 0.9060 48 1.2991 90 Manny Fernandez 2005-2006 0.9193 58 1.2975 91 Marc-Andre Fleury 2017-2018 0.9273 46 1.2960 92 Pekka Rinne 2017-2018 0.9271 59 1.2896 Vezina 93 Glenn Hall 1962-1963 0.9181 66 1.2822 Retro Vezina 94 Mike Vernon 1988-1989 0.8970 52 1.2812 95 Tom Barrasso 1997-1998 0.9215 63 1.2770 96 Tuukka Rask 2013-2014 0.9299 58 1.2753 Vezina 97 Dwayne Roloson 2002-2003 0.9265 50 1.2751 98 Pekka Rinne 2010-2011 0.9296 64 1.2720 99 Kelly Hrudey 1987-1988 0.8957 47 1.2711 100 Jonathan Quick 2011-2012 0.9286 69 1.2666
Most represented:
 Occurrences Goalies 7 [Patrick Roy, Dominik Hasek] 6 [Ken Dryden] 5 [Tony Esposito] 4 [Glenn Hall] 3 [Billy Smith, Glenn Resch] 2 [Jacques Plante, Kelly Hrudey, Curtis Joseph, Johnny Bower, Pekka Rinne, Ed Belfour, Tuukka Rask, Henrik Lundqvist, Tomas Vokoun, Dwayne Roloson, Bernie Parent, Daren Puppa, Tim Thomas, John Vanbiesbrouck] 1 [Sergei Bobrovsky, Pelle Lindbergh, Chris Mason, Felix Potvin, Mike Vernon, Murray Bannerman, Tom Barrasso, Roland Melanson, Bruce Gamble, Roman Cechmanek, Mike Smith, Jon Casey, Miikka Kiprusoff, Ron Hextall, Roberto Luongo, Martin Brodeur, Mike Dunham, Grant Fuhr, Pete Peeters, Manny Fernandez, Sean Burke, Ron Tugnutt, Jeff Hackett, Mike Palmateer, Marc-Andre Fleury, Marty Turco, Bob Essensa, Byron Dafoe, Jonathan Quick, Niklas Backstrom, Antti Raanta, Ryan Miller, Carey Price, Rogie Vachon, Jose Theodore, Bob Froese, Brian Elliott]