Fortuna Dusseldorf coach Friedhelm Funkel praised Zak Steffen after their 1-1 draw with Hoffenheim.
Funkel was delighted with the American's return to form - though was also eager to keep Steffen grounded.
He smiled afterwards: "I just expect Zack to make such saves.
"Of course he is an important constant in the fight for survival! But he too can improve..."
Steffen is on a season-long loan at F95.