According to Basketball Reference, there have been a total of
336 head coaches in NBA history.
53 of 336 (15.8%) have had at least 10 seasons as a head coach (Stotts: 13 seasons, 9 with POR). Of those 53,
- Stotts ranks 38th in career regular season win % at 51.2%
- Stotts ranks 49th in career playoff win % at 34.4%. Only coaches below him are Mike Fratello (32.3%), Nate McMillan (32.1%), Kevin Loughery (22.2%) and Don Chaney (18.2%).
21 0f 336 (6.3%) have had a coaching tenure for 9 consecutive seasons with one team. (Stotts 9 with POR). Of those 21,
- Stotts ranks 20th in regular season win % at 51.2%. Only Bill Fitch has a lower career regular season win % at 46.0%. However, Fitch has a career playoff win % at 50.5% and a NBA championship.
- Stotts ranks 21st in playoff win % at 34.4%. Ranked 20th is Doug Moe at 39.8%, a full 5.4 percentage points higher than Stotts.
15 of of the 21 (71.4%) head coaches with a coaching tenure of
9 consecutive seasons with one team have NBA championships. The coaches that don't have a NBA championship,
- Jerry Sloan: 60.3% career regular season win %, 48.5% career playoff win %, 2 NBA Finals appearances
- Don Nelson: 55.7% career regular season win %, 45.2% career playoff win %, 4 career Conference Finals game wins.
- Flip Saunders: 52.5 % career regular season win %, 48.0% career playoff win %, 8 career Conference Finals game wins
- John MacLeod: 51.8% career regular season win %, 46.5% career playoff win %, 1 NBA Finals appearance
- Doug Moe: 54.3 % career regular season win %, 39.8% career playoff win %, 4 career Conference Finals game wins.
Only 1 coach of 336 in NBA history that has at least 10 seasons as a head coach with a tenure of 9 consecutive seasons with one team and has ZERO Conference Finals games wins: Terry Stotts.
CONCLUSION: There is no justification for Stotts' 9 season tenure in Portland. Historically, he is a bottom tier coach. Only 6.3% of coaches in NBA history have been afforded a 9 consecutive season tenure with one team. Of those, 71% have an NBA championship, 81% have at least an NBA Finals appearance and 95% have at least 4 career Conference Finals game wins. Terry Stotts has none of those.
It's time to move on.