MILAN, April 7 — AC Milan strolled past 10-man Lecce 3-0 yesterday to consolidate second place in Serie A as Roma beat local rivals Lazio 1-0 and boosted their Champions League hopes.

Early goals from Christian Pulisic and Olivier Giroud, and Rafael Leao’s neat finish shortly before the hour mark, were enough for Milan to move 11 points behind runaway leaders Inter Milan, who are at struggling Udinese on Monday.