Linebacker Isaac Keys (Green Bay) had five tackles, forced a fumble and recovered it. Safety Bobby Jackson (Green Bay) had two tackles and two tackles on special teams, and linebacker Jermaine Petty (Green Bay) had two tackles.
Nall led the Claymores (2-4) 74 yards on the game's opening drive in five plays, highlighted by Maurice Hicks 58-yard touchdown run down the left sideline.
Nall connected with running back Ken Simonton for a 37-yard screen pass and touchdown that gave the Claymores a 14-0 lead midway through the first quarter.
Nall was replaced by Shane. Stafford in the second quarter, and Stafford's five-yard touchdown pass to Scott McCready capped an 83-yard drive and put Scotland up 21-6 with 4:36 remaining in the first half.
Local hero Daniel Benetka brought the crowd of 22,234 to life by interception a pass from Nall to set up a drive that ended when ex-Claymores quarterback James Brown fired an 8-yard touchdown pass to tight end Josh Whitman.
With the pendulum swinging toward the Galaxy (4-2), Frenchman Marc Soumah's reception paved the way for Brown to scramble right and hit Lester in the endzone from 6 yards. Jonas Lewis ran off left tackle for the two-point conversion to tie the score at 21-21.
Scotland quickly regained the lead as Simonton cut loose for a 60-yard gain and Nall connected with John Minardi for a 20-yard touchdown. But Rob Hart, who missed a 39-yard field goal attempt in the second half, missed a PAT attempt for the first time in his six-year NFL-E career.
Scotland was unable to score on its next drive, giving Frankfurt possession at their own 20-yard with two minutes remaining. Quarterback Gray found Lester and Whitman for first downs and ran for one himself before tight end Kori Dickerson made a great catch in traffic at the 14-yard line.
Gray led the Galaxy on an 80-yard touchdown drive to tie the game at 27-27, but Morgan, holding for the kicker, was unable to control the snap and the Galaxy's conversion attempt failed.
Here are Week 6 results from the other two NFL Europe games:
Berlin Thunder 24, F.C. Barcelona Dragons 14
Rhein Fire 34, Amsterdam Admirals 27