OAKLAND Landon Powell hadn't hit right-handed in more thana month. It had been much longer than that since Oakland's backupcatcher hit a home run. Both streaks ended emphatically Sunday, and suddenly theAthletics are one of the hottest teams in the American League. Powell hit a tiebreaking home run in the eighth inning, hisfirst homer since September, and the A's held on to beat the San Francisco Giants 2-1, completing a three-gamesweep at home of the defending World Series champs.