Wallstedt stopped 29 shots in Saturday's 4-1 win over the Panthers.
The only shot to get past him came early in the second period, as Matthew Tkachuk kept the puck on a 2-on-1 and banged home his own rebound. Wallstedt has started all five of the Wild's games so far, going 3-1-1 with a stellar .936 save percentage as he holds down the fort until Filip Gustavsson (hip) is cleared to return, which isn't expected to happen until November.