C · 7 seasons · 1969-70 – 1975-76
One category carried Rick Roberson and the rest pulled him back: +3.9 from rebounds, against a career total of -18.6. 1973-74 was the high-water mark, worth -0.2, 93rd that season and 10711th of 24,555 player-seasons on record. On the credit side, rebounds (+3.9). On the debit side, free-throw percentage (-12.9), assists (-3.6) and points (-2.1). The 298-place difference between his two bases is not noise: it is what he was worth per night set against how many nights he played.
| Season ↑ | Tm | GP | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1969-70 | LAL | 74 | -1.82 | #96 | #14,082 |
| 1970-71 | LAL | 65 | -2.76 | #149 | #16,357 |
| 1971-72 | CLE | 63 | -1.46 | #106 | #13,279 |
| 1972-73 | CLE | 62 | -2.19 | #123 | #14,955 |
| 1973-74★ | POR | 69 | -0.17 | #93 | #10,711 |
| 1974-75 | NOJ | 16 | -4.72 | #178 | #23,875 |
| 1975-76 | KCK | 74 | -5.49 | #221 | #24,532 |
★ Best season by Z (season totals)