SALT LAKE CITY Donovan Mitchell had 34 points and six assists to lead the Utah Jazz over the Boston Celtics 137-130 Friday night. Dennis Schroder added 26 points while Al Horford chipped in 21 points and nine assists. Utah scored a season-high 38 points in the first quarter and a season-high 41 in the third quarter. Boston scored 30 or more points in each of the final three quarters.