| Al Horford Rankings 2021-2022 | Stats Glossary  |
| Games with 7 or more Defensive Rebounds | Boston Celtics Record : 27 - 17 | Al Horford |
| No | Date | Game | Res | Score | Defensive Rebounds |
| 1 | Jun 16 | vs Golden_State | L | 90-103 | 11 |
| 2 | Jun 13 | at Golden_State | L | 94-104 | 8 |
| 3 | May 29 | at Miami | W | 100-96 | 12 |
| 4 | May 27 | vs Miami | L | 103-111 | 7 |
| 5 | May 25 | at Miami | W | 93-80 | 7 |
| 6 | May 23 | vs Miami | W | 102-82 | 11 |
| 7 | May 21 | vs Miami | L | 103-109 | 12 |
| 8 | May 15 | vs Milwaukee | W | 109-81 | 9 |
| 9 | May 13 | at Milwaukee | W | 108-95 | 8 |
| 10 | May 11 | vs Milwaukee | L | 107-110 | 7 |
| 11 | May 9 | at Milwaukee | W | 116-108 | 8 |
| 12 | May 7 | at Milwaukee | L | 101-103 | 13 |
| 13 | May 3 | vs Milwaukee | W | 109-86 | 11 |
| 14 | May 1 | vs Milwaukee | L | 89-101 | 10 |
| 15 | Apr 17 | vs Brooklyn | W | 115-114 | 9 |
| 16 | Apr 3 | vs Washington | W | 144-102 | 7 |
| 17 | Apr 1 | vs Indiana | W | 128-123 | 7 |
| 18 | Mar 30 | vs Miami | L | 98-106 | 11 |
| 19 | Mar 18 | at Sacramento | W | 126-97 | 8 |
| 20 | Mar 9 | at Charlotte | W | 115-101 | 9 |
| 21 | Mar 3 | vs Memphis | W | 120-107 | 9 |
| 22 | Feb 24 | at Brooklyn | W | 129-106 | 11 |
| 23 | Feb 16 | vs Detroit | L | 111-112 | 7 |
| 24 | Feb 15 | at Philadelphia | W | 135-87 | 9 |
| 25 | Feb 11 | vs Denver | W | 108-102 | 7 |
| 26 | Feb 6 | at Orlando | W | 116-83 | 7 |
| 27 | Feb 4 | at Detroit | W | 102-93 | 7 |
| 28 | Feb 2 | vs Charlotte | W | 113-107 | 11 |
| 29 | Jan 31 | vs Miami | W | 122-92 | 7 |
| 30 | Jan 19 | vs Charlotte | L | 102-111 | 8 |
| 31 | Dec 29 | vs L.A.Clippers | L | 82-91 | 8 |
| 32 | Dec 27 | at Minnesota | L | 103-108 | 7 |
| 33 | Dec 7 | at L.A.Lakers | L | 102-117 | 7 |
| 34 | Dec 1 | vs Philadelphia | W | 88-87 | 7 |
| 35 | Nov 28 | at Toronto | W | 109-97 | 8 |
| 36 | Nov 22 | vs Houston | W | 108-90 | 8 |
| 37 | Nov 20 | vs Oklahoma_City | W | 111-105 | 10 |
| 38 | Nov 15 | at Cleveland | W | 98-92 | 9 |
| 39 | Nov 3 | at Orlando | W | 92-79 | 10 |
| 40 | Nov 1 | vs Chicago | L | 114-128 | 8 |
| 41 | Oct 30 | at Washington | L | 112-115 | 10 |
| 42 | Oct 27 | vs Washington | L | 107-116 | 8 |
| 43 | Oct 24 | at Houston | W | 107-97 | 8 |
| 44 | Oct 22 | vs Toronto | L | 83-115 | 10 |
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