Boston teams have won 14.3% of the 4 major sports championships since 2000.
70 total - (2017 NFL - TBD, 2005 NHL - Lockout)
BOS - 10
LA - 7
CHI - 5 - (Blackhawks, Cubs, White Sox)
PIT - 5
SF - 5 - (Warriors, Giants)
NY - 4
MIA - 4 - (Heat, Marlins)
SA - 4
the Rest - 26