"Oscar is suffering from a small injury in his knee so we're going to rest him [Thursday]," Sweden coach Roger Ronnberg told NHL.com.
Lundstrom, a fifth-round pick of the Blues in 2011, stopped 25 of 26 shots in a 5-1 win against a Team USA split squad Monday.
Ronnberg said he's been happy with what he's seen from both his goaltenders in Lake Placid.
"I like them both," he said. "I think they are well-educated. We have a really good number of good goalie coaches in Sweden and that reflects on the goalies. Those guys are well-educated, they're good in the basics, they have a good game plan in how they should play in all situations. They give us the chance to win every night."
Ronnberg said there are two other goalies he'll evaluate at the next camp, in the Czech Republic in September, and it could be one of the more difficult decisions he has to make in building a team that can compete for a second-straight gold medal at the 2013 World Junior Championship.
"I have more guys at home," Ronnberg said. "We'll see. It's a hard situation to pick the best two."
Contact Adam Kimelman at email@example.com. Follow him on Twitter: @NHLAdamK