Lazio romped to a 5-1 away win at Como in Serie A on Thursday while city rivals Roma bought some time for under-fire coach Ivan Juric with a 1-0 win over Torino after being booed by their own fans. Lazio dazzled with Argentine striker Valentin Castellanos scoring twice, the first from the penalty spot after 28 minutes, while he won a one-on-one with the Como 'keeper for his team's fourth in the 81st minute. Spaniards Pedro and Patric scored the second and third while French under-21 striker Loum Tchaouna came off the bench to score his first for the club as the clock ticked down.