Watch as Udinese are twice denied by the frame of the goal with Lazar Samardzic and Gerard Deulofeu, while Lazio threaten through Sergej Milinkovic-Savic and Felipe Anderson.
This was a head-to-head for third place between two teams in fine form, and the Biancocelesti emerged with their fifth consecutive Serie A clean sheet.
It was largely thanks to the woodwork, which kept out both Samardzic and Deulofeu, while Marco Silvestri was alert on Felipe Anderson and a Milinkovic-Savic header.
The Stadio Olimpico crowd was stunned to see Capocannoniere Ciro Immobile limp off just 29 minutes in.