| Jiri Welsch Rankings 2003-2004 | Stats Glossary  |
| Games with 10 or more Efficiency Recap | Boston Celtics Record : 20 - 18 | Jiri Welsch |
| No | Date | Game | Res | Score | Efficiency Recap |
| 1 | Apr 23 | vs Indiana | L | 85-108 | 13 |
| 2 | Apr 17 | at Indiana | L | 88-104 | 11 |
| 3 | Apr 14 | vs Atlanta | W | 137-132 | 21 |
| 4 | Apr 12 | vs Miami | L | 77-84 | 11 |
| 5 | Apr 7 | at Miami | L | 101-104 | 12 |
| 6 | Apr 4 | at Washington | L | 102-112 | 13 |
| 7 | Apr 2 | vs Golden_State | W | 111-106 | 18 |
| 8 | Mar 28 | vs Philadelphia | W | 89-65 | 13 |
| 9 | Mar 26 | vs New_Jersey | W | 102-93 | 17 |
| 10 | Mar 7 | at Minnesota | W | 80-77 | 22 |
| 11 | Feb 29 | at Toronto | W | 91-82 | 22 |
| 12 | Feb 27 | vs Toronto | W | 88-75 | 11 |
| 13 | Feb 19 | at L.A.Clippers | L | 100-102 | 21 |
| 14 | Feb 6 | vs Atlanta | L | 96-100 | 18 |
| 15 | Feb 4 | vs L.A.Clippers | L | 86-95 | 20 |
| 16 | Jan 28 | vs Detroit | L | 103-106 | 20 |
| 17 | Jan 23 | vs Washington | W | 100-89 | 11 |
| 18 | Jan 18 | vs San_Antonio | L | 92-109 | 11 |
| 19 | Jan 16 | at Orlando | L | 118-124 | 14 |
| 20 | Jan 11 | at Houston | W | 97-93 | 28 |
| 21 | Jan 9 | vs Cleveland | W | 107-82 | 11 |
| 22 | Jan 7 | vs Orlando | W | 101-93 | 15 |
| 23 | Jan 3 | at Chicago | W | 88-77 | 11 |
| 24 | Jan 2 | vs Indiana | L | 90-103 | 13 |
| 25 | Dec 31 | vs New_Orleans | L | 94-96 | 20 |
| 26 | Dec 29 | at Golden_State | W | 100-91 | 15 |
| 27 | Dec 23 | at Atlanta | L | 88-93 | 10 |
| 28 | Dec 21 | vs Philadelphia | W | 87-84 | 24 |
| 29 | Dec 19 | vs Utah | L | 96-99 | 12 |
| 30 | Dec 17 | vs Dallas | W | 105-103 | 22 |
| 31 | Dec 13 | at Cleveland | W | 105-98 | 12 |
| 32 | Dec 10 | vs Seattle | W | 126-112 | 21 |
| 33 | Dec 8 | at Utah | W | 102-80 | 10 |
| 34 | Dec 7 | at Denver | W | 116-111 | 20 |
| 35 | Dec 5 | vs Phoenix | L | 106-110 | 13 |
| 36 | Dec 3 | at Toronto | L | 95-105 | 13 |
| 37 | Nov 29 | at Milwaukee | L | 94-100 | 17 |
| 38 | Nov 28 | vs Milwaukee | W | 106-96 | 15 |
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