@gimmesix , the 1/184 when carrying the ball is good, even very good... a graph I saw showing per 100 rates for teams over an 8 year span (2007-2014) had the very best team at 0.6 per 100 carries.
Then again... on closer scrutiny, it would seem conventional wisdom, not any research on my part, says most fumbles on carries occur when running between tackles where you're more likely to be getting touched, hit and slapped than you would be running end-arounds and reverses.
The 4/194 after reception is outright bad... almost 2 fumbles per 100, when the worst team in that same set of graphs came in at about 1.75 fumbles per 100 receptions.
I have concern.