Song: "Mr. Big Stuff"
Artist: Jean Knight
Peak position on the Cashbox Singles chart: #2
Number of weeks on the Cashbox Singles chart: 16
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| May 29, 1971 | 93 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| June 5, 1971 | 82 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| June 12, 1971 | 55 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| June 19, 1971 | 39 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| June 26, 1971 | 19 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| July 3, 1971 | 8 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| July 10, 1971 | 5 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| July 17, 1971 | 4 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| July 24, 1971 | 3 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| July 31, 1971 | 2 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| August 7, 1971 | 4 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| August 14, 1971 | 4 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| August 21, 1971 | 4 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| August 28, 1971 | 6 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| September 4, 1971 | 18 | Mr. Big Stuff | Jean Knight | Stax 0088 |
| September 11, 1971 | 34 | Mr. Big Stuff | Jean Knight | Stax 0088 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.