Michah Owings (3-6) took the loss after giving up all five runs and eight hits over 5 2/3 innings.
Cameron also drove in a run in Milwaukee's two-run first with an RBI single that was followed up by a run-scoring base hit by Mat Gamel
After Milwaukee added its third run on a sacrifice fly in the second by J.J. Hardy, the Reds got on the board in the third on an RBI single by Jay Bruce.
After Cameron's fifth-inning home run, Brandon Phillips hit a solo home run for the Reds to close out the scoring.
Copyright 2009 by United Press International.