The Los Angeles Lakers stretched their winning streak to six games with a rout of the New York Knicks on Tuesday but were given a scare as Anthony Davis hobbled off with a back injury. The Western Conference leaders cruised to a 117-87 win against a Knicks team who remain near the foot of the Eastern Conference with 10 wins and 27 losses. LeBron James led the scoring for the Lakers with a 31-point haul that included six three-pointers as well as five rebounds and five assists.