PHOENIX - Ish Smith scored a career-high 15 points, matched his career best of seven rebounds and triggered a 17-point second-quarter run that propelled the Phoenix Suns past the weary San Antonio Spurs 106-85 Friday night.
Markieff Morris scored 21 points and Channing Frye 17 for Phoenix. Gerald Green and Marcus Morris added 13 apiece.
Danny Green had 15 points and Tim Duncan 13 for the Spurs, who finished a nine-game road trip, the team's annual sojourn while a rodeo is held back home. The Spurs went 7-2 on the swing.
The Suns, 3-0 since the All-Star break, snapped San Antonio's four-game winning streak and climbed to a season-high 12 games above .500.
The Spurs' NBA-best road record dropped to 22-8.
The Suns outscored San Antonio 28-12 in the second quarter to lead 47-35 at the break, the Spurs' lowest scoring half of the season.
With a lineup of mostly bench players, the Suns scored 19 unanswered points to go up 38-25 with 5:59 left in the half.
San Antonio got the first basket of the second quarter, then didn't score again until Duncan's three-point play with 5:11 to play in the period. Frye responded with a 3-pointer, then Smith scored twice inside, the second on a nifty underhanded layup in traffic, and Phoenix had its biggest lead of the half, 45-28, with 3:06 to play.
Smith, getting added court time because Leandro Barbosa was out with a sprained left big toe, was 5 for 5 shooting in the second quarter for 10 points with five rebounds, two assists and a steal.
San Antonio's 12-point second quarter matched its lowest-scoring quarter of the season.
The Suns outscored the Spurs 17-7 to open the second half, taking a 64-42 lead on Frye's 3-pointer with 5:39 left in the period.
About that time, San Antonio coach Gregg Popovich sat Duncan and Manu Ginobili for the night.
Ginobili, a game-time decision because of a sore hamstring, played 13 minutes.
For the Spurs, Patty Mills was 2 of 14 from the field and Marco Belinelli 1 for 8. San Antonio was 2 of 21 from 3-point range.
The 21-point loss was the second-worst of the season for San Antonio. The Spurs lost by 23 at the Los Angeles Clippers Dec. 16.
NOTES: Phoenix snapped a five-game losing streak against the Spurs. ... Tony Parker missed his fourth game in a row for what Popovich labeled an assortment of ailments. ... San Antonio's only other loss on its marathon trip was 103-89 at Brooklyn. ... Popovich drew a technical seven minutes into the game and the Suns' P.J. Tucker got one in the second quarter. ... The Spurs have five days off before playing their first home game since Feb. 1, against Detroit next Wednesday.