SAN ANTONIO -- Take everything the Houston Rockets did right in a 27-point victory over San Antonio in Game 1 and flip it over to the Spurs in Game 2 of their Western Conference semifinal playoff series.

The reversal of performances Wednesday produced a 25-point victory for San Antonio that evened the best-of-seven series 1-1 and shows that the only thing that's consistent about NBA playoff basketball is its inconsistency.

Kawhi Leonard recorded 34 points, eight assists and seven rebounds as San Antonio rolled to a 121-96 victory over Houston on Wednesday at the AT&T Center. The series moves to Houston for Games 3 and 4 on Friday and Sunday, respectively.

"We laid an egg in Game 1 -- we didn't play well in any facet of the game and they did," Spurs coach Gregg Popovich said. "Tonight, we were better in transition. We guarded better. We rebounded better and we shot better, and that's why you play these games. Our guys came back and showed who they are tonight and I was proud of them."

San Antonio's victory celebration was tempered, however, by an injury to guard Tony Parker. He was carried off the floor by teammates with 8:43 remaining after sustaining a left leg injury.

The Spurs led 97-83 at the time of the injury, which happened as Parker landed in the paint underneath the Rockets' basket after missing a short layup.

Parker, who scored 18 points before the injury, was clutching his left knee as he lay on the floor as teammates and Houston players walked over to console him. He was carried off by teammates Dewayne Dedmon and Dejounte Murray and did not look up as the crowd chanted his name.

The team announced that Parker would have an MRI on Thursday.

LaMarcus Aldridge scored 15 points for the Spurs while Jonathon Simmons added 14 points, Danny Green hit for 12 -- all in the first half -- and Pau Gasol took a game-high 13 rebounds for San Antonio.

"We were able to get a feel for them the first game," Leonard said. "We're just trying to contest all shots, really limit them to one possession, don't let them rebound the basketball on the offensive end and get them off the 3-point line. The series isn't over. You can't be satisfied until it's done."

Ryan Anderson led the Rockets with 18 points as Houston got double-figure scoring from six players. Lou Williams hit for 15 points for Houston and Clint Capela poured in 14, James Harden scored 13 points and had 10 assists, Patrick Beverley tallied 12 points and Nene contributed 10 points. Harden was 3-for-17 from the field.

"I just missed shots," Harden said. "I didn't convert layups. We knew they were going to come out with some aggressiveness. We just have to go out there and take care of business and do the things we didn't do tonight."

The Spurs led by as many as nine points in the first quarter before settling for a 33-30 advantage after 12 minutes. Houston survived San Antonio's initial onslaught thanks to 10 points in the period from Anderson and a 9-2 run in the waning minutes.

San Antonio's final basket of the quarter was from Aldridge, who played the entire period and scored six points, two more than he had in Game 1. Green's nine points in the first quarter were the most he's had in a single quarter of a playoff game since he scored 11 in the 2014 NBA Finals.

The Spurs kept the hot hand in the second quarter thanks mostly to 19 assists on 27 made baskets, 56.3 percent shooting and one turnover. Houston trailed by as much as 13 points in the second quarter and went to halftime down 65-55 despite three points (on 1-of-9 shooting) by Harden and two points from Trevor Ariza.

Leonard led all scorers with 20 points in the half while Green hit for 12 and Parker had 11 for the Spurs. Houston was led by Anderson's 15 points (on 6 for 6 shooting) and Gordon's 12 points off the bench.

Harden's 10 points in the third quarter helped the Rockets cut the lead to 88-83 as things got a little testy and Houston showed it would not be satisfied with winning once on the Spurs' home floor.

But most of the good things the Rockets did to get close was washed away by a 9-0 San Antonio run over the first 1:52 of the fourth period, with the yeoman's work in that surge done by its bench players, namely Manu Ginobili and Simmons.

"We had some opportunities with 50/50 balls that we didn't get," Rockets coach Mike D'Antoni said. "We have to have more faith in us to beat these guys two times at their place. We just didn't to it tonight. Most of it comes down to loose balls and rebounds. It's a series; it's 1-1. We will gather ourselves in Houston. Now it's our turn to react."

NOTES: Spurs C/F Pau Gasol got his first start since Jan. 17 in Game 2 on Wednesday. Gasol began the season in the starting lineup but went to the bench after missing 15 games with a left hand injury. ... Houston has won Game 1 of both its series this postseason after losing the first game of the series in its past three postseason outings. The last time the Rockets won the first two Game 1s of a postseason was in 2009. ... Since San Antonio joined the NBA in 1976, no other player in the NBA has scored more points off the bench in the postseason than Spurs G Manu Ginobili. Of the 205 postseason games he's appeared in, Ginobili has come off the bench 153 times and scored 1,906 points in those appearances. ... Houston won Game 1 at San Antonio by 27 points, marking the largest margin of defeat by the Spurs at home in franchise playoff history.