Walker went 1-for-3 with a solo home run in Tuesday's 3-1 win over the Pirates.
Walker has hit safely in four straight games, a span that includes two of his four homers this season. The outfielder has gone just 7-for-39 (.179) since opening September with a five-hit game. For the year, he's batting .190 with a .609 OPS, 13 RBI, 12 runs scored and one stolen base over 40 contests, though he's received ample playing time down the stretch since the Cardinals faded from the playoff race.