MLB: Pittsburgh 5, St. Louis 4

July 31, 2013 at 11:34 PM

PITTSBURGH, July 31 (UPI) -- Russell Martin's RBI single in the eighth completed a Pittsburgh comeback Wednesday and gave the Pirates a 5-4 victory over St. Louis.

Pittsburgh won its fourth in a row, extended the Cardinals' losing streak to seven and extended its lead over St. Louis in the National League Central to 2 1/2 games.

The Pirates need 17 victories over their final 55 games to produce their first winning season in 21 years.

St. Louis took a 4-2 lead in the top of the fourth, but Clint Barmes doubled home a Pittsburgh run in the bottom half of the inning, Andrew McCutchen had a sacrifice fly in the fifth and Martin put the Pirates in front in the eighth.

Neil Walker singled leading off the eighth against Trevor Rosenthal (1-2) and moved to second on a deep fly ball to left by Pedro Alvarez that was the second out of the inning. Martin then singled to left on an 0-1 pitch.

Mark Melancon promptly retired the side in order in the ninth to earn his fifth save. Tony Watson (3-1) worked the seventh and eighth innings to claim the victory.

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