The Royals promoted Chourio from Single-A Columbia to High-A Quad Cities on Monday.
Jun 15Rotowire
Chourio was one of the top performing pitchers in the Carolina League through the first two-plus months of the season, despite being much younger than most of his peers at just 18 years old. He rode a mid-90s fastball and a pair of strong secondary offerings to a 1.88 ERA, 0.92 WHIP and 44:9 K:BB in 48 innings, with his dominance earning him a bump up to High-A. With a strong finish to the season at Quad Cities, Chourio could be in position to open the 2027 campaign at Double-A Northwest Arkansas and put himself on the radar for a big-league debut later next summer.
Chourio was one of the top performing pitchers in the Carolina League through the first two-plus months of the season, despite being much younger than most of his peers at just 18 years old. He rode a mid-90s fastball and a pair of strong secondary offerings to a 1.88 ERA, 0.92 WHIP and 44:9 K:BB in 48 innings, with his dominance earning him a bump up to High-A. With a strong finish to the season at Quad Cities, Chourio could be in position to open the 2027 campaign at Double-A Northwest Arkansas and put himself on the radar for a big-league debut later next summer.
Chourio was one of the top performing pitchers in the Carolina League through the first two-plus months of the season, despite being much younger than most of his peers at just 18 years old. He rode a mid-90s fastball and a pair of strong secondary offerings to a 1.88 ERA, 0.92 WHIP and 44:9 K:BB in 48 innings, with his dominance earning him a bump up to High-A. With a strong finish to the season at Quad Cities, Chourio could be in position to open the 2027 campaign at Double-A Northwest Arkansas and put himself on the radar for a big-league debut later next summer.
Chourio has a 1.42 ERA, 0.71 WHIP and 15:2 K:BB in 12.2 innings through three starts for Single-A Columbia.
Apr 16Rotowire
Despite the fact Chourio won't turn 19 until October, his assignment to Single-A was hardly surprising, as he had a 20.8 K-BB% and 1.06 WHIP in six starts for the Fireflies to close 2025. Chourio has an enviable combination of easy mid-90s fastball velocity, plus command and several high-quality secondary pitches. He, along with Seth Hernandez of the Pirates, leads an enticing group of lower-level arms that will vie for the title of No. 1 pitching prospect in baseball in 2027.
Despite the fact Chourio won't turn 19 until October, his assignment to Single-A was hardly surprising, as he had a 20.8 K-BB% and 1.06 WHIP in six starts for the Fireflies to close 2025. Chourio has an enviable combination of easy mid-90s fastball velocity, plus command and several high-quality secondary pitches. He, along with Seth Hernandez of the Pirates, leads an enticing group of lower-level arms that will vie for the title of No. 1 pitching prospect in baseball in 2027.
Despite the fact Chourio won't turn 19 until October, his assignment to Single-A was hardly surprising, as he had a 20.8 K-BB% and 1.06 WHIP in six starts for the Fireflies to close 2025. Chourio has an enviable combination of easy mid-90s fastball velocity, plus command and several high-quality secondary pitches. He, along with Seth Hernandez of the Pirates, leads an enticing group of lower-level arms that will vie for the title of No. 1 pitching prospect in baseball in 2027.
Chourio, 17, has a 2.98 ERA, 0.89 WHIP and 60:4 K:BB in 48.1 innings across three levels of the minors this season.
9/2/25Rotowire
Chourio laid waste to the Dominican Summer League (31.3 K-BB%) and Arizona Complex League (35.4 K-BB%) before getting another aggressive assignment with a bump to Single-A Columbia on July 29. He turns 18 in October but already boasts a 95-98 mph fastball and two strong secondaries in his curveball and changeup. His combination of stuff, command and maturity give Chourio one of the highest ceilings among all pitching prospects.
Chourio laid waste to the Dominican Summer League (31.3 K-BB%) and Arizona Complex League (35.4 K-BB%) before getting another aggressive assignment with a bump to Single-A Columbia on July 29. He turns 18 in October but already boasts a 95-98 mph fastball and two strong secondaries in his curveball and changeup. His combination of stuff, command and maturity give Chourio one of the highest ceilings among all pitching prospects.
Chourio laid waste to the Dominican Summer League (31.3 K-BB%) and Arizona Complex League (35.4 K-BB%) before getting another aggressive assignment with a bump to Single-A Columbia on July 29. He turns 18 in October but already boasts a 95-98 mph fastball and two strong secondaries in his curveball and changeup. His combination of stuff, command and maturity give Chourio one of the highest ceilings among all pitching prospects.
DiamondScout