Walker underwent tests on his left knee after he was removed from Tuesday's Grapefruit League game against the Nationals, and the Cardinals are expected to provide an update on his status later Wednesday, John Denton of MLB.com reports.

EDGE Analysis

Walker tweaked his knee when he stepped on a sprinkler head while pursuing a flyball in the second inning of Tuesday's contest. The Cardinals classified his injury as left knee discomfort after he exited the game, but a formal diagnosis should be provided once his tests results are in.

Walker was removed from Tuesday's Grapefruit League game against the Nationals in the third inning with a pain in his left knee, Katie Woo of The Athletic reports.

EDGE Analysis

Walker appeared to tweak his knee while chasing down a flyball in the second inning, as he was seen grimacing and grabbing at his leg after the play. He struck out in his lone plate appearance before exiting. Walker will be re-evaluated once the Cardinals return to their spring training complex.

Walker has been working with new Cardinals hitting coach Brant Brown this offseason on rediscovering the swing he had prior to the 2024 season, Derrick Goold of the St. Louis Post-Dispatch reports.

EDGE Analysis

Upon reviewing video from 2024 and comparing it to 2023, Walker and Brown noticed that the outfielder's hands were separating from his body too soon, while the balance in his lower half was also inconsistent as he gravitated toward a wider stance. The goal, per Walker, is to "hit line drives" and "drive the ball in the gap" instead of putting so much emphasis on lofting the ball in the air. Walker said he's "super-excited" with the early results of his swing changes and can't wait to test it out against live pitching. The Cardinals are committed to youth in 2025, which includes giving Walker a long leash in right field. The 22-year-old Walker slashed only .201/.253/.366 over 52 regular-season games with St. Louis in 2024 while spending a large chunk of the campaign in the minors.

Walker went 1-for-3 with a two-run home run and a walk against the Guardians in Saturday's 6-5 victory.

EDGE Analysis

Walker opened the scoring in the contest with a two-run shot to left field in the fourth inning. The young outfielder has been productive of late, batting .269 (7-for-26) with three home runs and eight RBI over his past eight contests. Walker looks to be finishing 2024 on a strong note following a disappointing start to the season that resulted in him spending most of the campaign in the minors.

Walker went 1-for-3 with a solo home run in Tuesday's 3-1 win over the Pirates.

EDGE Analysis

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.

Walker went 1-for-2 with a walk and a solo home run in Saturday's 7-2 loss to the Blue Jays.

EDGE Analysis

The 22-year-old got the Cardinals on the board in the third inning by launching a hanging slurve from Jose Berrios over the fence in left-center field. Walker has hit all three of his homers in the majors this season in September, but since a 5-for-5 performance Sept. 1 against the Yankees, he's gone just 4-for-30 (.133) with a 1:12 BB:K.

Walker is out of the lineup for Friday's game against the Blue Jays.

EDGE Analysis

Walker made six straight starts in right field, but he'll get the night off Friday. During those six starts, Walker went 3-for-20 (.150) with a solo home run. Brendan Donovan, Michael Siani and Lars Nootbaar will fill the outfield from left to right Friday.

Walker went 1-for-4 with a solo home run in Friday's 6-1 loss to the Mariners.

EDGE Analysis

The 22-year-old accounted for the Cardinals' only offense when he took Troy Taylor deep in the seventh inning. Walker has two big-league homers this year, and both have come since he was called back up in late August. His 0:9 BB:K in six games since his promotion highlights how much work he needs to do to become a consistent fantasy asset, however.

Walker isn't in the Cardinals' lineup for Wednesday's game against the Brewers.

EDGE Analysis

Walker will get a chance to clear his head Wednesday after going 0-for-8 with four strikeouts over the first two games of the series. His absence will move Alec Burleson into the outfield with Nolan Arenado serving as St. Louis' DH, opening up third base for Jose Fermin.

Walker went 5-for-5 with a home run, a stolen base, four runs scored and three RBI in Sunday's win against the Yankees.

EDGE Analysis

Walker did it all Sunday, going a perfect 5-for-5 and even stealing his first base of the season for good measure. Walker opened the scoring with an RBI-single in the second before slugging a two-run home run in the fifth to extend the Cardinals lead to five. Cardinals manager Oliver Marmol stated on Friday that Walker will have an everyday spot in the lineup, and that will certainly be the case after today's performance. A former first-round pick, the 22-year-old Walker has undeniable upside but he has struggled in 2024, slashing .143/.218/.221 with zero home runs in 87 plate appearances before Sunday's explosion.