Gastelum (5-4) took the loss after allowing one run on a hit and a walk while striking out two over one inning in Friday's 8-4 loss to the Brewers.
This was Gastelum's first loss since Aug. 21, when he allowed two runs (one earned) in one inning against the Phillies. Gastelum entered for the seventh with St. Louis trailing 4-1 and worked around a hit and a walk to keep Milwaukee scoreless. The Cardinals tied the game in the top of the eighth, but Gastelum returned in the bottom half of the inning and allowed a single to Jackson Chourio, who would end up scoring the go-ahead run. Gastelum has given up runs in four of his last 10 appearances, but he still has posted decent numbers over that span, notably a 3.72 ERA and 10.2 K/9 across 9.2 frames. With two games left in the regular season. Gastelum has a 4.42 ERA and 1.25 WHIP across 36.2 innings in 34 relief outings.
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Cardinals' Luis Gastelum: Settling in after rough start
Rotowire
Gastelum is unscored upon in his last five appearances, logging a 12:1 K:BB over 6.1 innings during that span.
Gastelum was rocked for 15 runs (12 earned) with a 10:5 K:BB over 13.1 innings in his first 12 appearances in the majors. The rookie reliever has adjusted nicely, though, settling in as a valuable middle relief arm in St. Louis. Gastelum could move up the leverage ladder if he keeps up his recent form -- he has zero saves and just one hold so far. which came back on July 22.
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Cardinals' Luis Gastelum: Added to St. Louis bullpen
Rotowire
The Cardinals selected Gastelum's contract from Triple-A Memphis on Wednesday.
Gastelum netted his first major-league promotion after logging a 2.27 ERA and 49:17 K:BB over 43.2 innings with Memphis. The righty was unscored upon in his last 18 appearances, authoring a 30:5 K:BB across 22.1 frames during that span.
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Cardinals' Luis Gastelum: Poised for promotion
Rotowire
The Cardinals are slated to call up Gastelum from Triple-A Memphis, Jeff Jones of the Belleville News-Democrat reports.
He's expected to be promoted either in between games during Tuesday's doubleheader or before Wednesday's contest. Gastelum has been on a roll at Memphis, turning in 18 consecutive scoreless appearances. Overall, the changeup artist has collected a 2.27 ERA and 49:17 K:BB over 43.2 innings this season. The Cardinals will need to free up a spot on the 40-man roster for Gastelum.
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Cardinals' Luis Gastelum: Scoreless streak at Triple-A
Rotowire
Gastelum has put together a 19-inning scoreless streak at Triple-A Memphis and boasts a 25:2 K:BB over that stretch.
Gastelum had one rocky outing back in mid-May during which he allowed six runs in two-thirds of an inning, but despite that appearance he still boasts a 2.45 ERA, 0.94 WHIP and 44:14 K:BB over 40.1 innings overall for Memphis. The 24-year-old right-hander sits in the low-90s with his fastball, but he's known for a devastating changeup that he's used to log a 31.2 percent strikeout rate in the minors. Gastelum is not on the Cardinals' 40-man roster, but is pushing hard for a chance to prove himself in the majors sooner rather than later.
