Something that caught my eye a few days ago was that shorthanded goals aren't factored into a team's PP and PK percentages. This doesn't make a lot of sense.

Imagine the following two imaginary teams, Chemmy's Crusaders, and PPP's Punchingbags:

Team PPG PPO PP%
CHE 45 180 25%
PPP 35 180 19%

My team is clearly better on the power play, right?

What if I told you that Chemmy's Crusaders gave up 15 short handed goals, while PPP's Punchingbags only gave up 2? Clearly that changes things. In a sport like hockey, the fact is that it doesn't matter how many goals you score, it matters how many more goals you score than your opponent (a fact not lost on Leafs fans).

Subtracting a team's SHGA from the PPG, and subtracting a team's SHGF from the PK goals allowed gives us a clearer picture of what a team's special teams do. This is really simple, why is it not more common to factor in shorthanded goals for and shorthanded goals against into power play and penalty kill percentages? Our example teams' stat lines now look like this:

Team PPG PPO PP% SHGA Adj. PP%
CHE 45 180 25% 15 17%
PPP 35 180 19% 2 18%

A similarly obvious approach to the penalty kill follows:

Team PPGA TSH PK% SHGF Adj. PK%
CHE 25 170 85% 8 90%
PPP 20 170 88% 1 89%

Here's a list of that data for the NHL currently.

Power Play:

TEAM PPG PPO PP% SHGA PPADJ
Detroit 49 179 27.4 0 27%
Philadelphia 43 160 26.9 0 27%
Boston 38 160 23.8 3 22%
Chicago 41 180 22.8 2 22%
Minnesota 38 175 21.7 2 21%
Washington 40 178 22.5 4 20%
Buffalo 37 181 20.4 1 20%
San Jose 44 192 22.9 6 20%
St. Louis 40 184 21.7 4 20%
Anaheim 37 174 21.3 3 20%
Atlanta 38 180 21.1 6 18%
Toronto 37 186 19.9 4 18%
New Jersey 28 155 18.1 2 17%
Vancouver 34 197 17.3 2 16%
NY Islanders 32 179 17.9 3 16%
Ottawa 30 168 17.9 3 16%
Edmonton 34 187 18.2 4 16%
Los Angeles 34 188 18.1 4 16%
Colorado 29 175 16.6 3 15%
Calgary 36 190 18.9 8 15%
Dallas 26 181 14.4 0 14%
Montreal 30 197 15.2 3 14%
Tampa Bay 28 182 15.4 4 13%
Carolina 31 199 15.6 5 13%
Pittsburgh 33 192 17.2 8 13%
Phoenix 24 187 12.8 1 12%
Nashville 23 173 13.3 3 12%
Florida 25 166 15.1 6 11%
NY Rangers 27 193 14 13 7%
Columbus 20 186 10.8 9 6%

Penalty Kill:

TEAM PPGA TSH PK% SHG PKADJ
NY Rangers 21 171 87.7 5 91%
San Jose 23 157 85.4 8 90%
Buffalo 22 170 87.1 4 89%
Philadelphia 36 214 83.2 13 89%
Minnesota 18 146 87.7 2 89%
Calgary 26 182 85.7 3 87%
NY Islanders 34 193 82.4 9 87%
Nashville 32 200 84 6 87%
Chicago 27 168 83.9 5 87%
Montreal 33 190 82.6 8 87%
Boston 26 156 83.3 4 86%
Florida 30 178 83.1 4 85%
Ottawa 30 170 82.4 3 84%
Los Angeles 32 186 82.8 2 84%
New Jersey 31 165 81.2 4 84%
Vancouver 39 212 81.6 4 83%
Phoenix 33 168 80.4 4 83%
Columbus 36 190 81.1 3 83%
Tampa Bay 39 211 81.5 2 82%
St. Louis 36 185 80.5 3 82%
Detroit 35 179 80.4 3 82%
Anaheim 43 228 81.1 2 82%
Pittsburgh 38 187 79.7 4 82%
Washington 41 201 79.6 4 82%
Colorado 35 165 78.8 2 80%
Dallas 38 168 77.4 1 78%
Carolina 36 162 77.8 0 78%
Edmonton 45 179 74.9 2 76%
Atlanta 48 184 73.9 1 74%
Toronto 43 159 73 1 74%

Like I said, this isn't exactly rocket science, just a little clearer view on special team's in this blogger's humble opinion.