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Richard Leonard Adelman (born June 16, 1946) is an American former professional basketball player and coach. He coached 23 seasons in the National Basketball Association (NBA). Adelman served as head coach of the Portland Trail Blazers, Golden State Warriors, Sacramento Kings, Houston Rockets and Minnesota Timberwolves. He was inducted into the Naismith Basketball Hall of Fame in the class of 2021.
| Year | Team | GP | MPG | FG% | FT% | RPG | APG | SPG | BPG | PPG |
| 1968–69 | San Diego | 77 | 18.8 | 394 | 642 | 2.8 | 3.1 | 6.3 | ||
| 1969–70 | San Diego | 35 | 20.5 | 389 | 747 | 2.3 | 3.2 | 7.4 | ||
| 1970–71 | Portland | 81 | 28.4 | 422 | 724 | 3.5 | 4.7 | 12.6 | ||
| 1971–72 | Portland | 80 | 30.6 | 437 | 751 | 2.9 | 5.2 | 10.1 | ||
| 1972–73 | Portland | 76 | 24.0 | 408 | 716 | 2.1 | 3.9 | 6.6 | ||
| 1973–74 | Chicago | 55 | 11.2 | 376 | 711 | 1.3 | 1.0 | 7 | 0 | 3.3 |
| 1974–75 | Chicago | 12 | 28.3 | 413 | 718 | 2.2 | 2.9 | 1.3 | 1 | 9.5 |
| 1974–75 | New Orleans | 28 | 21.9 | 421 | 695 | 2.0 | 2.5 | 1.7 | 2 | 6.3 |
| 1974–75 | Kansas City–Omaha | 18 | 6.7 | 464 | 800 | 8 | 4 | 4 | 1 | 1.7 |
| Career | 462 | 22.6 | 415 | 713 | 2.4 | 3.5 | 9 | 1 | 7.7 | |
| Year | Team | GP | MPG | FG% | FT% | RPG | APG | SPG | BPG | PPG |
| 1969 | San Diego | 6 | 31.2 | 453 | 595 | 2.5 | 4.8 | 11.7 | ||
| 1974 | Chicago | 9 | 12.0 | 471 | 636 | 1.1 | 8 | 8 | 0 | 4.3 |
| 1975 | Kansas City–Omaha | 6 | 5.7 | 333 | 750 | 3 | 5 | 2 | 0 | 2.0 |
| Playoffs | 21 | 15.7 | 448 | 625 | 1.3 | 1.9 | 5 | 0 | 5.8 | |
| Team | Year | G | W | L | W–L% | Finish | PG | PW | PL | PW–L% | Result |
| Portland | 1988–89 | 35 | 14 | 21 | 400 | 5th in Pacific | 3 | 0 | 3 | 000 | Lost in First Round |
| Portland | 1989–90 | 82 | 59 | 23 | 720 | 2nd in Pacific | 21 | 12 | 9 | 571 | Lost in NBA Finals |
| Portland | 1990–91 | 82 | 63 | 19 | 768 | 1st in Pacific | 16 | 9 | 7 | 563 | Lost in Conf. Finals |
| Portland | 1991–92 | 82 | 57 | 25 | 695 | 1st in Pacific | 21 | 13 | 8 | 619 | Lost in NBA Finals |
| Portland | 1992–93 | 82 | 51 | 31 | 622 | 3rd in Pacific | 4 | 1 | 3 | 250 | Lost in First Round |
| Portland | 1993–94 | 82 | 47 | 35 | 573 | 4th in Pacific | 4 | 1 | 3 | 250 | Lost in First Round |
| Golden State | 1995–96 | 82 | 36 | 46 | 439 | 6th in Pacific | — | — | — | — | Missed Playoffs |
| Golden State | 1996–97 | 82 | 30 | 52 | 366 | 7th in Pacific | — | — | — | — | Missed Playoffs |
| Sacramento | 1998–99 | 50 | 27 | 23 | 540 | 3rd in Pacific | 5 | 2 | 3 | 400 | Lost in First Round |
| Sacramento | 1999–00 | 82 | 44 | 38 | 537 | 5th in Pacific | 5 | 2 | 3 | 400 | Lost in First Round |
| Sacramento | 2000–01 | 82 | 55 | 27 | 671 | 2nd in Pacific | 8 | 3 | 5 | 375 | Lost in Conf. Semifinals |
| Sacramento | 2001–02 | 82 | 61 | 21 | 744 | 1st in Pacific | 16 | 10 | 6 | 625 | Lost in Conf. Finals |
| Sacramento | 2002–03 | 82 | 59 | 23 | 720 | 1st in Pacific | 12 | 7 | 5 | 583 | Lost in Conf. Semifinals |
| Sacramento | 2003–04 | 82 | 55 | 27 | 671 | 2nd in Pacific | 12 | 7 | 5 | 583 | Lost in Conf. Semifinals |
| Sacramento | 2004–05 | 82 | 50 | 32 | 610 | 2nd in Pacific | 5 | 1 | 4 | 200 | Lost in First Round |
| Sacramento | 2005–06 | 82 | 44 | 38 | 537 | 4th in Pacific | 6 | 2 | 4 | 333 | Lost in First Round |
| Houston | 2007–08 | 82 | 55 | 27 | 671 | 3rd in Southwest | 6 | 2 | 4 | 333 | Lost in First Round |
| Houston | 2008–09 | 82 | 53 | 29 | 654 | 2nd in Southwest | 13 | 7 | 6 | 538 | Lost in Conf. Semifinals |
| Houston | 2009–10 | 82 | 42 | 40 | 512 | 3rd in Southwest | — | — | — | — | Missed Playoffs |
| Houston | 2010–11 | 82 | 43 | 39 | 524 | 5th in Southwest | — | — | — | — | Missed Playoffs |
| Minnesota | 2011–12 | 66 | 26 | 40 | 394 | 5th in Northwest | — | — | — | — | Missed Playoffs |
| Minnesota | 2012–13 | 82 | 31 | 51 | 378 | 5th in Northwest | — | — | — | — | Missed Playoffs |
| Minnesota | 2013–14 | 82 | 40 | 42 | 488 | 3rd in Northwest | — | — | — | — | Missed Playoffs |
| Career | 1,791 | 1,042 | 749 | 582 | 157 | 79 | 78 | 503 | |||