Brent Rooker became the first Oakland player in nearly 30 years to homer twice in an inning, accomplishing the feat in the third inning to help the Athletics pound the Miami Marlins 20-4 on Saturday for their sixth consecutive victory. The Athletics only All-Star a year ago, Rooker drilled a two-run drive off Trevor Rogers (0-5), then added a three-run shot off Darren McCaughan in the 10-run inning. Oakland set season highs for runs and hits with 21. Rooker is the 60th player in major league history to homer twice in an inning. The last A’s player to do it was Mark McGwire against Seattle on Sept. 22, 1996. Brett Harris also homered twice for Oakland, a day after making his major league debut.