BOSTON (AP) -- Isaiah Thomas scored 24 of his 41 points in the fourth quarter and the Boston Celtics held off the Detroit Pistons 113-109 on Monday night to extend their winning streak to four games.
Jae Crowder added 21 points and Al Horford scored 13 for Boston, which had to rally after Detroit surged midway through the fourth quarter and the teams traded the lead.
Andre Drummond had 28 points and pulled down 22 rebounds for the Pistons, who outscored Boston 60-38 in the paint and outrebounded the Celtics 51-44. Kentavious Caldwell-Pope added 18 points for Detroit, which lost its third straight.
Thomas extended his run of games with at least 20 points to 32 in a row and carried Boston down the stretch, making nine free throws in the fourth quarter while going 15 for 15 from the line.
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