Who keeps track of this stuff?

From the Elias Sports Bureau:

"Carlos Beltran's sixth-inning solo home run accounted for all of the scoring in the Mets' triumph at Washington. Beltran became the sixth player to homer in a 1-0 game at RFK Stadium and the first to do it since the Expos relocated to the nation's capital. The others to do it were Manny Jimenez (1962 Kansas City Athletics), Don Lock (1963 Senators), Tommie Agee (1967 White Sox), Frank Howard (1969 Senators) and Curt Blefary (1971 Yankees)."