Peter Johns

Regatta	Role	Div	Races	Avg	Rating
Spring 2012 Team page Season
Robert P. Arrigan Memorial Regatta	Skipper	A	14	6.4	1.03
Fall 2011 Team page Season
St. Mary's Fall Intersectional	Skipper	B	8	10.6	2.43
Navy Fall	Skipper	B	18	8.7	2.92
The Hatch Brown Trophy	Skipper	A	16	10.9	2.87
Spring 2011 Team page Season
Old Dominion Open	Skipper	A	12	2.3	4.06
Fall 2009 Team page Season
Tom Curtis Memorial Regatta	Skipper	A	6	2.5	3.64
Maisa Top 9 Invite	Skipper	A	17	7.5	2.57

Short write-ups of what the ratings and results show, with the numbers and how they were computed.

How do skipper ratings work?A log-strength fitted to every race at once, smoothed week to week.
What a rating point is worthA one-point edge is a 73% chance to beat another boat in a race; two points is 88%.
How does a crew rating work?A crew rating is small and uncertain; a worked example on one roster.