A concert by 2 Chainz  at the House of Blues was quickly followed by a station-closing brawl on the Green Line platform at Kenmore station.
Mike Moura  reports at least three people were injured before MBTA Transit Police gained control of the platform, EMTs removed the wounded and the station was reopened around 10:45. The T reports the three were taken to Mass. General with minor injuries.
Riptor  reports:
Big fight at Kenmore inbound platform, tons of screaming, everyone giving a wide berth.
Upstairs, a woman was hit in the head with a heel outside the Fenway Park ticket office. Tim Caputo  at WHDH reports:
Not bleeding. Didn't appear hurt. Looked out of breath.
A man may have been knocked unconscious elsewhere on Brookline Avenue.
Even before the show ended, police shut Lansdowne Street to traffic - although they allowed three black SUVs to come down the street the wrong way to pick up the performer and his entourage.