Shai Gilgeous-Alexander scored 31 points, and the Oklahoma City Thunder improved to 6-0 by beating the Washington Wizards 127-108 on Thursday night. Reserve Ajay Mitchell added 20 points for the Thunder. Isaiah Joe, who missed Oklahoma City’s first five games with a knee bruise, scored 20 points and made five 3-pointers for a team that entered the night last in the league in 3-point percentage at 28.8%.