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Mythbusters: Start Quality Bias
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Jeff Veillette
Mar 13, 2014, 15:30 EDTUpdated:
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Earlier in the season, there was a lot of debate over which goalie was getting what game in net. It’s faded away a bit, mostly because people are surprised to see James Reimer between the pipes at all nowadays. But I decided to take a couple of minutes to see if such a disparity actually existed, and/or currently exists.

The Method

Rather than going into deep statistics, I decided that this could be solved using a simpler concept. At first, I took every game both Bernier and James Reimer started in, figured out their opponent’s position in their conference at the end of the night, and their position to day, and averaged them out. But then I realized; do the Wins and Losses really matter to goaltending? After all, they only control goals against.
What I went with instead was goals for per game, for the opponents. I skipped the “Night Of” for the first two weeks of the season because they weren’t going to be anything close to accurate with samples that small.

The Tables

Jonathan Bernier
DateOPPNight OfCurrentDATEOPPNight OfCurrent
2-Oct
PHI
n/a
2.83
27-Dec
BUF
2.31
1.98
8-Oct
COL
n/a
3.06
29-Dec
CAR
2.33
2.51
10-Oct
NSH
n/a
2.42
1-Jan
DET
2.6
2.65
12-Oct
EDM
n/a
2.52
4-Jan
NYR
2.44
2.61
17-Oct
CAR
2.25
2.51
7-Jan
NYI
2.76
2.81
19-Oct
CHI
2.88
3.41
10-Jan
WSH
3.07
2.88
22-Oct
ANA
3.56
3.18
12-Jan
NJD
2.3
2.47
25-Oct
CBJ
2.8
2.92
14-Jan
BOS
2.87
3.2
30-Oct
CGY
3
2.41
18-Jan
MTL
2.57
2.49
8-Nov
NJD
1.88
2.47
20-Jan
PHX
2.88
2.79
13-Nov
MIN
2.63
2.48
28-Jan
TBL
2.96
2.86
15-Nov
BUF
1.86
1.98
30-Jan
FLA
2.44
2.38
19-Nov
NYI
2.86
2.81
1-Feb
OTT
2.87
2.85
21-Nov
NSH
2.36
2.42
4-Feb
FLA
2.45
2.38
27-Nov
PIT
3
3.17
6-Feb
TBL
2.88
2.86
30-Nov
MTL
2.7
2.49
8-Feb
VAN
2.43
2.35
5-Dec
DAL
2.81
2.89
27-Feb
NYI
2.77
2.81
8-Dec
BOS
2.8
3.2
1-Mar
MTL
2.56
2.49
11-Dec
LAK
2.75
2.45
5-Mar
NYR
2.6
2.61
14-Dec
CHI
3.77
3.41
8-Mar
PHI
2.86
2.83
16-Dec
PIT
3.09
3.17
10-Mar
ANA
3.2
3.18
23-Dec
NYR
2.32
2.61
 
 
 
James Reimer
DateOPPNight ofCurrentDATEOPPNight OfCurrent
1-Oct
MTL
n/a
2.49
7-Dec
OTT
2.87
2.85
5-Oct
OTT
n/a
2.85
12-Dec
STL
3.53
3.28
15-Oct
MIN
2.43
2.48
17-Dec
FLA
2.31
2.38
26-Oct
PIT
3.18
3.17
19-Dec
PHX
3.12
2.79
29-Oct
EDM
2.57
2.52
21-Dec
DET
2.61
2.65
2-Nov
VAN
2.88
2.35
9-Jan
CAR
2.52
2.51
9-Nov
BOS
2.81
3.2
15-Jan
BUF
1.8
1.98
16-Nov
BUF
1.86
1.98
21-Jan
COL
2.94
3.06
23-Nov
WSH
3
2.88
23-Jan
DAL
2.9
2.89
25-Nov
CBJ
2.58
2.92
25-Jan
WPG
2.81
2.75
29-Nov
BUF
1.78
1.98
3-Mar
CBJ
2.95
2.92
3-Dec
SJS
3.56
3.11
11-Mar
SJS
3.11
3.11
The Results
For those curious about what my first attempt at this post said, teams that Bernier faces average a standings placement of 8.02 in the conference on game night, and 8.34 in the present. Reimer’s opponents are 9.08 at the time, and 8.83 today.
But the actual meat of the tables I’ve gone with shows an even tighter gap. Teams that faced Bernier scored about 2.70 goals per game at the time, and 2.72 now. Reimer’s opponents had 2.73 goals per game at the time, and 2.71 now.
The idea, at least for a while, was that James Reimer was being given games where he was destined to fail. The reality of the fact is that we’re talking about a two and a half goal gap over 82 games using night-of rates, and not even a single goal using present rates.
There was an idea floating around for a while that Reimer was being stuck with more back-to-back situations as well, but the reality there is that the gap is only six to four, which is very insigificant.
The last real hope for this argument would be the rate of shots that the two actually faced from these teams. As it turns out, Reimer faces 37.07 shots per 60 minutes while Bernier faces 35.007, but that’s also not a severe enough gap to phone home about. 
From a quality perspective, it seems like the goalies have been given an equal opportunity to succeed. The bigger question comes in quantity, which clearly, is still dominated by Bernier.
Photo courtesy of @markhmasters
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