Jayson Tatum had 31 points and eight rebounds, Jaylen Brown added 22 points and eight rebounds and the Boston Celtics beat the Detroit Pistons 114-103 on Friday night for their fifth victory in a row.

Marcus Smart added 20 points, and Robert Williams III had 12 points and nine rebounds for the Celtics. They have won 18 of 21 since a Jan. 21 loss dropped them a game below 500.

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Cade Cunningham had 27 points and eight rebounds for the Central Division-trailing Pistons, who had won three in a row before falling Wednesday night to Chicago. Marvin Bagley III had 20 points and 11 rebounds, and Jerami Grant also scored 20 points.

The Celtics never led by more than four points before scoring the last four points of the third quarter and the first seven of the fourth to turn a two-point deficit into a 99-90 lead.

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The Celtics honoured some former players who were in town for the retirement of Kevin Garnett’s No. 5 on Sunday. Among them were members of the 2008 NBA championship team, including Paul Pierce, James Posey, Leon Powe and Brian Scalabrine.

Pistons forward Kelly Olynyk, who played his first four seasons in Boston, was also recognized.

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Garnett will be the 24th Celtic to be honoured in the TD Garden rafters, including No. 1 for original owner Walter Brown, No. 2 for franchise patriarch Red Auerbach and “LOSCY” for Jim Loscutoff, who left his No. 18 in circulation so Dave Cowens could wear it.

Tip-Ins

Tatum topped 30 points for his fifth straight game, tying the longest such streak of his career. … The Pistons made their first 19 free throws and finished 23 of 24.

Up next

Pistons: Host the Los Angeles Clippers on Sunday.

Celtics: Host Dallas on Sunday.