Al Leiter and the New York Mets received a scare when the left-hander was hit in the head by a line drive Saturday.

Leiter grabbed the side of his face after being struck by Alex Gonzalez’s liner in the second inning of New York’s 21-13 victory over the Florida Marlins in Jupiter, Fla.

The pitcher fell on the mound, but never lost consciousness. After being treated by trainers, he stood up on his own and walked to a nearby golf cart that brought him to the clubhouse.

Leiter was taken to Jupiter Medical Center for a CT scan and X-rays, which were negative. He was to return to the team’s spring training complex in Port St. Lucie to be examined by assistant team physician Joe Bosco.

“I’ll be fine. I’ve got a little headache and a little bruise,” Leiter said. “I saw it and I thought I had it. It was knuckling a little bit, and I missed it.”

The left-hander said he didn’t know if he would miss his first start Thursday night in Atlanta.

“If it’s still really sore I won’t push it,” Leiter said.

The Colorado Rockies will start the season without slugger Larry Walker, who was placed on the 15-day disabled list because of a strained left groin.

The three-time NL batting champion has been sidelined most of the spring because of the injury. He was hurt early in spring training and aggravated the injury in an exhibition game on a checked swing. The move was made retroactive to March 26.

The Philadelphia Phillies opened their new ballpark with a 6-5 loss to the Cleveland Indians.

The outcome didn’t seem to matter for the sellout crowd getting its first look at Citizens Bank Park.

Fan favorite Jim Thome picked up where he left off last year when he led the National League with 47 home runs, smashing a solo shot in the first inning for the first hit.

Pat Burrell added a three-run homer in the fifth inning, but the Indians went ahead for good when Chris Clapinski homered off Rheal Cormier leading off the seventh.

The intimate, baseball-only ballpark mixed modern conveniences with old-time charm. Real grass, an open-air stadium with a splendid view of Center City, wider seats angled toward home plate and more concession choices with a local flavor made the ballpark a hit with fans.

In other spring training games:

Braves 5, Red Sox 0

At Atlanta, Red Sox closer Keith Foulke finished a rocky spring by giving up two runs while getting only one out. Foulke ended the spring with a 15.59 ERA, allowing 17 hits and 15 runs in 82/3 innings.

Devil Rays 7, Blue Jays 5

At Dunedin, Fla., Tampa Bay’s Mark Hendrickson pitched six solid innings against his former team.

Reds 5, Orioles 3

At Chattanooga, Tenn., Sean Casey drove in a run and scored on a passed ball in the final spring training game for both teams. Jose Acevedo allowed one earned run and six hits in four innings for the Reds.

Pirates 7, Twins 4

At Bradenton, Fla., hours after learning he’d won a spot in Pittsburgh’s rotation, Ryan Vogelsong capped a solid spring with four strong innings.

Cardinals 5, Redbirds 1

At Memphis, Tenn., Albert Pujols hit a two-run homer, and the Cardinals beat their Triple-A affiliate. Jeff Suppan gave up one run and struck out five in six innings for the win.

Tigers 7, Yankees 7 (10)

At Tampa, Fla., Bernie Williams went 1-for-3 and drove in a run in his first major-league spring training game this year. Williams had played in eight minor-league games since having his appendix removed Feb. 26.

Diamondbacks 8, Cubs 7

At Phoenix, Richie Sexson hit his fifth homer of the spring for the Diamondbacks. Sergio Mitre, the Cubs’ No. 5 starter until Mark Prior comes back from the disabled list, pitched three scoreless innings.

Athletics 11, Giants 10 (10)

At Oakland, Calif., Jermaine Dye homered off Felix Rodriguez and drove in five runs. New A’s closer Arthur Rhodes was tagged for four runs and six hits, increasing his ERA to 6.42. Giants ace Jason Schmidt was placed on the 15-day disabled list after struggling for most of the spring because of a sore right shoulder.