It was somehow fitting that after Ottawa's Daniel
Alfredsson scored on the NHL's first ever shoot-out penalty shot, Toronto's Jason Allison
lost the puck on the next one and didn't even get a shot off.
Toronto's second
shooter, Eric Lindros - who hadn't taken a penalty shot since he missed one
in the 1998 Olympics - also missed the net before Dany Heatley mercifully
ended the game, scoring on a wrist shot from 27 feet out.
Usually a one-on-one situation in hockey gives the offensive player a huge
advantage, and breakaways make for great goal-scoring opportunities. So how
were Toronto's two top
offensive players so bad at taking penalty shots that they couldn't even
hit the net from less than 20 feet away?
Through October 23rd of this year, NHL shoot-out and penalty shot results have
been remarkably bad (for the shooters, that is):
|
|
2005-06 |
% |
|
Goal |
24 |
36.9 |
|
Save |
31 |
47.7 |
|
Missed Net |
10 |
15.3 |
Incomprehensibly, almost one in six penalty shots has missed the net. And
even when the shot is on net, it's still more likely to be stopped than to
go in. This has been true over the last six seasons:
|
|
2005-06 |
2003-04 |
2002-03 |
2001-02 |
2000-01 |
1999-00 |
Total |
|
Goal |
24 |
18 |
9 |
11 |
9 |
7 |
78 |
|
No Goal |
41 |
37 |
30 |
35 |
20 |
22 |
185 |
|
%Goal |
36.9 |
32.7 |
23.1 |
23.9 |
31.0 |
24.1 |
29.7 |
Perhaps due to the reduction in the size of goaltender equipment this
season, the penalty shooting percentage is higher than in the past. But the
difference is not very substantial - just three or four goals per 50 shots
- and is within the bounds of random variation.
Most fans would tell you that the reason so few goals are scored on penalty
shots is that very few players have the offensive "moves"
required to beat a goalie one-on-one. So what if we control for offensive
skills?
The table below shows the shooting percentage for different groups of
players, separated by offensive production (goals scored) per 82 games:
|
|
G/82 |
Shots |
Goals |
% |
|
Top 25% |
>28 |
63 |
17 |
27.0 |
|
50%-75% |
21-28 |
62 |
18 |
29.0 |
|
25%-50% |
14-20 |
63 |
17 |
27.0 |
|
Bottom 25% |
2-14 |
62 |
21 |
33.9 |
The bottom line here is no relationship between regular goal-scoring skills
and those on a penalty shot.
Perennial 30-goal scorers actually performed worse than the group of
players who averaged 2-14 goals per season. Over the last six years, Mike
Comrie, Jarome Iginla, Ziggy Palffy, Martin St. Louis and Mats Sundin have
been a colletive "o-fer" on penalty shots. Clearly, superb good
offensive skills offers no penalty shot guarantee.
Given such futility, what then are the characteristics of successful
penalty shots?
During regular game play, shots taken closer to the net are more likely to
become goals, since players find it easier to pick a corner or the
five-hole from close-in. The following chart shows shooting percentage
versus distance from the goal:

The pink series shows Penalty Shots and Shoot-outs only, while all other
shots are shown in blue.
Note that our play-by-play data only tells us the distance of the shot, not
its location on the ice. Penalty shots are taken from the slot right in
front of the net, while during game play, shots also come from many
low-percentage angles. The further one gets from the net, the harder it
becomes for a player to score-- though less so in the case of penalty
shots.
It's also obvious that linear regression does not predict penalty shot
shooting percentage as well as it does shots taken during the course of the
game. The correlation of our line of best fit is just 0.47 for penalty
shots compared to 0.994 otherwise, which suggests that something else is
influencing penalty shots.
|
Type |
Shots |
Goals |
% |
|
Wrist Shot |
79 |
31 |
39 |
|
Snap Shot |
17 |
6 |
35 |
|
Slap Shot |
12 |
2 |
17 |
|
Backhand |
34 |
11 |
32 |
What about the type of shot taken? The majority of penalty shots are wrist
shots, which our analysis shows, are slightly more likely than the average
to slip past the goalie.
Inside 15 feet, shooting percentages for backhands and wrist shots are
identical and the shots occur in equal numbers. Since only 40 such shots
have been taken since the 2002-03 season started, there's a problem with
statistical significance.
Winding up for a slap shot in the shoot-out rarely pays off, like when Tampa Bay's Martin St.
Louis recently wound from 29 feet out against Washington's Olaf Kolzig.
So is there any good news for shooters?
In the past, most teams didn't face more than two penalty shots in any
given season. The Carolina Hurricanes had a four year span without one.
But now that penalty shot competence decides one in ten games, we can only
assume that teams are practicing much more than before. Shooting percentage
does seem to be edging up very slightly with each new week of the season.
And players have been missing the net much less often than they did during
the first week of shootouts.
While the penalty shot has historically been a rarity in the NHL, by the end of
this season, we'll have seen so many penalty shots that it should be
obvious who figured out how to score on them.