The Friday File: In some sports the difference between success and failure is tiny. In the 100-yard sprint, hundredths of seconds make all the difference, same is true in downhill skiing. Add NHL goaltending to the list. Today, superstar goalies save better than 91.5% of the shots they face, good goalies save between 91% and 91.5% and backup goalies save less than 91%. Two generations ago, top goaltenders saved 89%.