ST. LOUIS -- Todd Walker's RBI grounder scored Juan Pierre with the go-ahead run in the 14th inning, lifting the Chicago Cubs to a 5-4 victory over the St. Louis Cardinals on Friday night.

Closer Ryan Dempster (1-3) worked three innings and Pierre and Michael Barrett each had three hits for the Cubs, who got this month off to a better start than May, when they were an abysmal 7-22.

Scott Rolen had three hits for the Cardinals, including a go-ahead two-run seventh-inning double after Albert Pujols was intentionally walked to load the bases. But a fielding error by the six-time Gold Glove third baseman allowed the Cubs to score a pair of unearned runs off Jason Isringhausen to tie it in the ninth.

Walker's routine bases-loaded grounder went between the legs of Rolen with one out in the ninth, allowing two runs to score to tie it at 4.

The Cardinals loaded the bases in the 10th and 12th, coming up empty both times with David Eckstein making the last out. He lined out to third off Scott Eyre to end the 10th and bounced out against Dempster (1-3) to end the 12th.

Light-hitting Yadier Molina had four hits for the Cardinals, raising his average to .196. However, Pujols was 1-for-6 for the Cardinals, who are 13-13 against the NL Central after going 51-29 against the division last year.

Pierre doubled off Josh Hancock (1-2), the last St. Louis pitcher and starting his fourth inning, to start the 14th. He advanced on Neifi Perez' sacrifice and Barrett was intentionally walked before Walker, who was 0-for-7, hit a sharp grounder to first to allow Pierre to score without a play.

The Cardinals had a season-high 19 hits, but were hampered by a depleted bench, with Jim Edmonds unavailable due to an abdominal injury that could land him on the 15-day disabled list and Scott Spiezio at home due to illness for the second straight game.

Jacque Jones homered for the third straight game and had three hits for the Cubs. Pierre's RBI single in the fifth was his fifth of the season, but third in five games.

Jones led off the fifth with his 10th homer and the Cubs added another run in the inning on Pierre's one-out RBI single.

The Cardinals cut the gap to a run in the sixth on a two-out RBI single by So Taguchi, who got the game-winning hit in an 11-inning victory over the Astros on Wednesday.

Aaron Miles' sacrifice fly off Scott Williamson made it 4-2 in the eighth.

Notes: New St. Louis Rams coach Scott Linehan threw out the first pitch to Cardinals pitcher Jason Marquis. ... Cubs RHP Mark Prior, rehabbing from a shoulder injury, makes his second rehab start on Saturday for Class A Peoria. ... A crowd of 45,799, the largest at new Busch Stadium, continues the Cardinals' streak of all sellouts at the ballpark. ... Eckstein leads the NL with 24 multihit games after going 2-for-7. ... Barrett is 10-for-24 against St. Louis pitching with three homers and 10 RBIs. ... Matt Murton was 0-for-3 after going 10-for-23 during a seven-game hitting streak. He's 2-for-23 against the Cardinals. ... Pujols has 12 intentional walks, second-most in the majors behind Barry Bonds' 21.