Lazio substitute Felipe Caicedo scored in stoppage-time for the second week running to earn his side a 1-1 draw at home to Juventus in Serie A on Sunday after Cristiano Ronaldo had given the champions a first-half lead.
Caicedo, who grabbed a 98th-minute winner at Torino last weekend and notched a late equaliser in Wednesday's 1-1 draw at Zenit St Petersburg, levelled in the 94th minute to end Juve's resistance after Lazio had dominated the second half.
Ronaldo had given the titleholders a 15th-minute lead with his sixth league goal of the season. He also hit the post and saw a free kick saved before half-time but was taken off in the second half after appearing to hurt his ankle.
Juventus have 13 points from seven games, three behind leaders AC Milan who host Verona later on Sunday. Lazio have 11 points.
"Championships and matches are won on details and we didn't keep possession of the ball in the final seconds," Juventus coach Andrea Pirlo said.
"We weren't streetwise enough to bring home the points. It's a shame about the last 10 seconds because our goal was never in danger. We are satisfied with the performance but not the result."
Lazio coach Simone Inzaghi said his team had showed "immense heart."
"We've had a remarkable run of incredible games with players at the limit and going through Plan A, B and C," he said. "They surpassed themselves again."
Juan Cuadrado set up Juve's goal with a run down the right and cross into the area which Ronaldo turned in from close range.
He smacked another effort against the post after doing well to make space for a shot and saw a free kick brilliantly turned away by Pepe Reina in stoppage time.
Lazio dominated possession in the second half but the Juventus defence held out well and restricted them to a couple of half chances until Caicedo performed his speciality act.
Joaquin Correa weaved his way into the area and found Caicedo who scored with a shot on the turn to stun the visitors.