Packers tight end Tory Humphrey caught four passes for 33 yards for the first-place Admirals (7-2). Packers wide receivers Chad Lucas and Vince Butler had catches of 9 yards and 1 yard, respectively. Of Bigby's 10 tackles, nine were solo.
Defensive tackle Jerome Nichols had three solo tackles, two sacks for 16 yards and forced a fumble for the Galaxy (6-3).
Frankfurt needs to win its final game next week to clinch the second World Bowl spot ahead of the Rhein Fire (5-4). The Fire lost 13-10 at Hamburg. The Packers' Pete Traynor started at center for Rhein.
Cologne defeated Berlin 25-7 in the day's other game. Packers quarterback Brian Wrobel did not play for Berlin.