PORT ST. LUCIE, Fla. -- Mike Pelfrey's continued struggles did not quite overshadow Saturday's power display by the Mets, who played to a 6-6 tie in 10 innings with the Cardinals at Digital Domain Park.

Entering Saturday's game having allowed 16 runs over 9 2/3 Grapefruit League innings, Pelfrey gave up another five runs -- four earned -- in six innings against the Cardinals. After breezing through his first two scoreless innings, Pelfrey served up Daniel Descalso's two-run double and Jon Jay's two-run single in the third. He also allowed an RBI double to Yadier Molina in the fifth inning, giving up a total of eight hits, but actually lowering his Grapefruit League ERA to 11.49.

"I made a couple pitches that I left up and I didn't execute, and they hit them," Pelfrey said. "But I thought I was aggressive throwing strikes, and the ball came out of my hand pretty good, so I was pleased."

Ronny Cedeno took Pelfrey off the hook in the sixth inning, singling home two runs off Scott Linebrink -- thanks in part to a throwing error by Descalso -- to give the Mets a one-run margin. The Cardinals threatened to tie things in the eighth, putting a runner on third base with one out, but Jon Rauch escaped that jam.

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The Redbirds did tie the game in the ninth, when Mark Hamilton's drive to left was misplayed by Vinny Rottino, allowing Eugenio Velez to score.

"Not so good in parts," Cards manager Mike Matheny said of what was a sloppy game for both sides. "But these guys fought back again. Down early, some things didn't go the way we wanted them to, but guys kept playing the game. It's hard to teach that."

St. Louis starter Lance Lynn also struggled with two walks and two home runs allowed, a day after the Cardinals announced that Chris Carpenter will open the season on the disabled list with continued nerve issues. Lynn is in line to replace Carpenter in the rotation.

Most of the early damage against Lynn came on Davis' opposite-field, three-run home run in the first. Though Lynn settled down after that, he also served up Duda's booming fourth-inning homer off the batter's eye in center field.

Up next: World Series hero David Freese is expected back in the lineup Sunday against the Twins after a couple of routine days off. Though Freese is hitting just .233 this spring, he does have three homers. Kyle Lohse will make the 1:05 p.m. ET start opposite Nick Blackburn.