| Tim Duncan Rankings 2003-2004 | Stats Glossary  |
| Games with 13 or more Rebounds | San Antonio Spurs Record : 25 - 11 | Tim Duncan |
| No | Date | Game | Res | Score | Rebounds |
| 1 | May 13 | vs L.A.Lakers | L | 73-74 | 21 |
| 2 | May 9 | at L.A.Lakers | L | 81-105 | 13 |
| 3 | Apr 22 | at Memphis | W | 95-93 | 13 |
| 4 | Apr 14 | vs Denver | W | 93-67 | 16 |
| 5 | Apr 12 | at Portland | W | 78-66 | 15 |
| 6 | Apr 9 | vs Portland | W | 84-74 | 14 |
| 7 | Apr 4 | at L.A.Lakers | W | 95-89 | 13 |
| 8 | Mar 25 | vs Detroit | W | 84-75 | 13 |
| 9 | Mar 20 | vs Boston | W | 103-87 | 15 |
| 10 | Feb 26 | at Dallas | L | 91-115 | 17 |
| 11 | Feb 24 | vs Houston | W | 86-77 | 13 |
| 12 | Feb 18 | at Toronto | W | 86-82 | 21 |
| 13 | Feb 6 | at Sacramento | W | 102-94 | 14 |
| 14 | Feb 5 | at Seattle | W | 96-90 | 14 |
| 15 | Jan 31 | vs Utah | W | 85-81 | 14 |
| 16 | Jan 29 | vs Sacramento | L | 91-96 | 18 |
| 17 | Jan 27 | at New_York | W | 77-67 | 19 |
| 18 | Jan 24 | vs New_Orleans | L | 96-98 | 13 |
| 19 | Jan 21 | vs New_Jersey | W | 99-76 | 17 |
| 20 | Jan 14 | vs Minnesota | L | 93-100 | 20 |
| 21 | Jan 10 | vs Indiana | W | 89-88 | 15 |
| 22 | Dec 28 | vs Milwaukee | W | 89-74 | 15 |
| 23 | Dec 26 | vs Orlando | W | 98-83 | 16 |
| 24 | Dec 19 | at Seattle | W | 87-73 | 20 |
| 25 | Dec 17 | vs Toronto | W | 73-70 | 13 |
| 26 | Dec 15 | vs Memphis | W | 78-67 | 13 |
| 27 | Dec 10 | vs Portland | W | 102-77 | 14 |
| 28 | Dec 8 | at Chicago | W | 96-82 | 14 |
| 29 | Dec 6 | at Miami | W | 86-70 | 19 |
| 30 | Dec 3 | vs L.A.Lakers | L | 86-90 | 15 |
| 31 | Nov 29 | at Golden_State | L | 89-91 | 15 |
| 32 | Nov 20 | at Dallas | L | 92-95 | 17 |
| 33 | Nov 15 | at Washington | W | 95-71 | 13 |
| 34 | Nov 14 | at Philadelphia | L | 96-100 | 15 |
| 35 | Nov 1 | vs New_York | W | 86-74 | 15 |
| 36 | Oct 29 | at Denver | L | 72-80 | 21 |
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