Brock McGinn made it 2-0, dropping to one knee for a wrist shot at 6:45 of the second period.
After Jarry made a pad save on a wraparound by John Hayden at 8:40, Zemgus Girgensons cut it to 2-1 on a wrist shot at 12:35.
Casey Fitzgerald, making his NHL debut, set up Girgensons' goal with a shot that went off Penguins defenseman Mike Matheson in front.
"It was awesome. Come in here, I found out two days ago," Fitzgerald said. "So, it's been a crazy two days. But it was a lot of fun. It was nice to get a point there. Wish we got two, but it was just an awesome experience."
NOTES:Fitzgerald's father, Tom Fitzgerald, is general manager of the New Jersey Devils. He worked eight seasons with the Penguins (2007-15) and was an assistant coach for the 2009 Stanley Cup champions. Tom Fitzgerald scored 329 points (139 goals, 190 assists) in 1,097 games for seven NHL teams. … Rodrigues is playing first-line left wing for Pittsburgh in place of Jake Guentzel, who is week to week with an upper-body injury. He has scored five points (two goals, three assists) in four games since Guentzel was injured. … Penguins forward Brian Boyle did not play after missing practice Thursday with a lower-body injury. He is day to day. … Buffalo defenseman Will Butcher and forward Anders Bjork each did not play with an illness unrelated to COVID-19.