The Boston Herald reported that Sammy Hagar and David Lee Roth performed in Mansfield, MA on Wed, Aug. 28. They were joined by members of Boston to perform the song "When It's Love". The members that performed were not named, but the members on stage were Barry Goudreau, Sib Hashian and Fran Sheehan. Neither Tom Scholz or Brad Delp were present.
The article can be found at
http://www2.bostonherald.com/entertainment/music/vanh08292002.htm