SAN ANTONIO, March 4 (Ticker) -- The San Antonio Spurs stepped on the gas in the fourth quarter.

Tim Duncan scored 22 points and Tony Parker added 18 as the Spurs took control in the final period en route to a 101-81 victory over the Portland Trail Blazers.

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Coming off a huge win over Dallas, San Antonio (46-12) struggled for three quarters before outscoring Portland, 32-16, over the final 12 minutes.

"It's always good when you get a win at home before going on the road," said Spurs coach Gregg Popovich, whose team starts a three-game road trip Monday. "It was nice to have so much participation from everyone."

The Spurs improved to 3-0 against the Trail Blazers this season and beat them for the 12th time in the last 13 meetings overall.

Manu Ginobili's 3-pointer capped a 9-2 run to start the fourth quarter that gave the Spurs a 78-67 lead. The Blazers climbed back within 80-75 with 6:43 left on Zach Randolph's three-point play.

"We wanted more movement with the ball," Portland coach Nate McMillan said. "We only had fourteen free throws, so we didn't get to the foul line enough."

However, the Spurs answered with a 7-0 surge to take control for good. Michael Finley scored six points in the burst.

"We did a better job in the second half of the game tonight," Spurs forward Bruce Bowen said.

Seldom-used Beno Udrih helped Finley in the fourth quarter, when he scored nine of his 11 points.

"Beno is really a good player," Popovich said. "He's been chomping at the bit for minutes and has really done well when he has gone out on the floor."

Duncan made 10-of-16 shots and grabbed 15 rebounds and Parker handed out five assists. Ginobili finished with 13 points for the Spurs, who had six players reach double figures.

"I'm feeling pretty good right now," Duncan said about how he feels physically despite some nagging injuries. "I'm as healthy right now as I have been all season."

Randolph had 24 points and nine rebounds and Darius Miles added 16 points for the Blazers, who were held to 38 percent (34-of-89) shooting overall.