Julio Franco became the oldest player in major league history to hit a home run on Thursday night when he connected for a two-run, pinch-hit shot in the eighth inning at San Diego. Franco, 47, drove a 1-0 pitch from reliever Scott Linebrink into the home-run porch down the right-field line at Petco Park. The previous oldest player to homer was Athletics pitcher Jack Quinn, who was 46 years, 357 days old when he homered on June 27, 1930.