Los Angeles quarterback Matthew Stafford was 28 of 42 for 308 yards with a touchdown and an interception.
Register now for FREE unlimited access to Reuters.com RegisterBrett Maher made field goals of 33, 40 and 36 yards for the Cowboys.
Allen's day included a 98-yard touchdown pass to Gabe Davis, which tied a franchise record for the longest completion.
Patriots 29, Lions 0Bailey Zappe threw a touchdown pass in his first career NFL start and Kyle Dugger returned a fumble for a touchdown as New England cruised past Detroit at Foxborough, Mass.
Saints 39, Seahawks 32Taysom Hill ran for 112 yards and three touchdowns, while also throwing a touchdown pass as host New Orleans defeated Seattle.