One of the great traits of Celtics coach Doc Rivers is his brutal honesty.

He, like many others around the NBA, thought the Phoenix Suns hit a home run two seasons ago when they traded for Shaquille O’Neal, putting him alongside Amar’e Stoudemire and Steve Nash. Rivers just assumed the Suns would take off, challenge the Lakers and Nuggets for Western Conference supremacy.

Not so much. After a half-season in 2007-08, when they were eliminated in the first round, the Suns fell to 46-36 last season, not even good enough to qualify for the Western playoffs.

“I was obviously wrong,” Rivers said. “I didn’t that was a bad match with Shaq and Stoudamire.”

But the Suns could never optimize O’Neal’s presence with Nash and Stoudamire and the Suns let O’Neal go to Cleveland this past off season. The more nimble, athletic 6-11 Channing Frye has taken O’Neal’s spot and is averaging 14.6 points in Phoenix’s 4-1 start to this season.

“I thought you had one post guy and Stoudamire is more off the post than on the post so I thought it was a good combination but it just didn’t work out for whatever reason,” Rivers added. “It’s good to see Channing Frye play well. I’ve always been pretty high on him as a player. I think he’s another great example, a litle like Shelden [Williams], guys who take a little time to find their way and I guess he’s found his way.”