Artem Anisimov also scored for the Stanley Cup champions, and Corey Crawford made 16 saves while improving to 5-1 in seven career starts against Florida.
Keith had a meniscal tear repaired on Tuesday, sidelining the two-time Norris Trophy winner for four to six weeks. It could be a huge blow for the Blackhawks, who were already thin on defense and play in one of the NHL’s best divisions, but they responded with a smart, measured performance on the first night of Keith’s extended absence.
Jaromir Jagr and Vincent Trocheck scored for Florida, which has dropped three in a row. Roberto Luongo made 24 saves.