Gortat did not return and Phoenix, already without backup Jermaine O'Neal, was left with Haddadi as the only true center available.
As a result, the Suns spent the bulk of the game with a smaller lineup that was dominated by the speedy Raptors' guards, led by DeRozan and Telfair.
"The movement stopped working and everything," said P.J. Tucker, one of three Suns with eight points. "We went small, had threes at the four, fours at the five. In live games, to be able to make plays, make it work is hard when you're small like that."
Toronto opened the second half on a 7-0 run to make it 61-40 with 9:49 left in the third quarter and led by at least 15 the rest of the way.
"We were desperate and tired of losing, being on that five-game losing streak," DeRozan said. "We had to continue to keep stepping on their necks. We tend to give up leads tonight and tonight we stayed focused, especially on defense."
NOTES: Morris kept the Suns from matching the 32-year-old franchise record for fewest points with a 3-pointer with 23 seconds left. ... X-rays on Gortat's foot were negative. He's schedule for an MRI exam on Thursday. Gortat has started 138 consecutive games for the Suns and 182 straight overall. ... Telfair had his highest scoring total since getting for the Suns on Jan. 14 against Oklahoma City. ... Gortat finished with eight points, tied for third-highest on the team. ... Haddadi played just over nine minutes, his first game action since coming to the Suns, and had two rebounds and four fouls. . O'Neal left the team to be with his 13-year-old daughter, who is undergoing surgery to repair a leaking heart valve. . The Suns' 29 turnovers were a team high at US Airways Center.