The Royals have placed right-hander Michael Lorenzen on the 15-day injured list due to a strained left hamstring, per a team announcement. Righty Steven Cruz has been recalled from Triple-A Omaha in his place. Lorenzen sustained the injury yesterday when covering first base on a grounder.
Acquired in a deadline swap that sent lefty reliever Walter Pennington to the Rangers, Lorenzen has been a boon to the Kansas City rotation. In five starts, he’s pitched 24 1/3 innings of 1.85 ERA ball, striking out 17% of his opponents against a 10% walk rate. Metrics like FIP (4.20) and SIERA (5.11) aren’t nearly as bullish, given the righty’s pedestrian strikeout, walk and ground-ball rates.
Even if Lorenzen can’t be reasonably expected to continue producing a sub-2.00 ERA, the results thus far have been an unequivocal jolt for a team that had been struggling to get production from fifth starter Alec Marsh. Kansas City has won each of Lorenzen’s last three starts, and there’s little blame to be placed on him for the team’s loss in his Royals debut; he tossed 5 2/3 innings of one-run ball in a game the Royals eventually lost by a score of 6-5.
The Royals didn’t provide a timetable for Lorenzen’s return, but he’ll be down for at least two weeks. The aforementioned Marsh is the likeliest candidate to step back into the rotation in his stead. In 20 starts this season (plus one relief appearance), the 26-year-old Marsh has tossed 106 innings with a 4.67 earned run average.
Marsh’s 21.3% strikeout rate and 7.4% walk rate are both better than Lorenzen’s season-long marks between Texas and Kansas City, but he also faded significantly following a strong start to the season. Over his past eight trips to the mound, he’s been rocked for a 6.46 ERA and surrendered seven homers in 39 innings (1.62 HR/9). Marsh was sharp in four Triple-A starts this month after being optioned (1.80 ERA, 19-to-5 K/BB ratio in 15 innings), and the Royals will now need to hope for more of that type of output while Lorenzen mends.
As for the 25-year-old Cruz, this’ll be his first look with the Royals in 2024. He made his big league debut last year, pitching 12 2/3 innings with a 4.97 ERA and a 15-to-11 K/BB ratio in that short time. Kansas City acquired the hard-throwing righty in the 2022-23 offseason trade that sent Michael A. Taylor to the division-rival Twins. He’s pitched exclusively out of the Omaha bullpen this season and recorded a 3.35 ERA with a 26.6% strikeout rate and 11.1% walk rate in 48 1/3 innings. Cruz’s four-seamer has averaged 96.9 mph in Triple-A this season, and he’s primarily paired that pitch with a slider that sits at 89.4 mph.