It falls in Area D, but I wouldn't be surprised if Fenway related radio traffic is carried on Channel 1. You might also listen to BAPERN AREA WIDE 4 as there are very likely to be police from several other agencies assisting BPD. MSP will also be in the area with a Talk Group patched in as well. The MSP helo will be overhead.
No doubt Boston EMS will have extra units in the area.