Jack Etkin

Pitching at the hitter’s haven that is Lancaster helped focus and boost the 23-year-old closer’s composure.

A loud pro debut in the Pioneer League affirms the Rockies’ favorable evaluation of Doyle’s tools and aptitude.

Focusing on his curveball and slightly changing his fastball grip helped the 27-year-old minor league veteran become a legitimate prospect.

The 23-year-old Dominican pitches in the mid-90s, but not until learning to slow his breathing did he consistently execute pitches.

After undergoing surgery in June to remove loose bodies in his right elbow, Castellani is back pitching in the Arizona Fall League.

The Rockies’ No. 7 prospect, Hilliard has set career-highs in home runs (35), RBIs (101) and doubles (29) this season.

The 23rd-round pick out of college pitched his way to high Class A thanks to a deep arsenal and confidence to throw any pitch at any time.

A second-round pick in 2016, Bowden held Double-A opponents to a .096 average before being promoted to Triple-A Albuquerque.

The 2018 first-rounder prioritizes development over results—which is impressive given how well he has pitched this year.

Enhanced selectivity at the plate has helped the former San Diego State shortstop establish himself in pro ball.

The 19-year-old Venezuelan got into better shape and improved his delivery and arm speed, which could pay off handsomely in 2019.

The 24-year-old reliever gets swings and misses above the belt. Now the Rockies want him to turn his slider into a weapon.

The lefthanded-hitting Boswell launched 27 home runs at two Class A stops last season while playing two positions.

After having success out of the bullpen in the Arizona Fall League, Tinoco could eventually feature in Colorado as either a starter or reliever.

Fuentes escaped the looming shadow of cousin Nolan Arenado by tweaking his swing and enhancing his positional versatility.

Health was the biggest factor in Nevin’s career-best season in the California League, but a quiet, disciplined hitting approach didn’t hurt.

The natural second baseman can play all over the infield, the outfield and even catcher, which he gleefully proved at instructional league.

The hitter-friendly winds of Lancaster never seduced Colton Welker to sell out for home runs.

The Rockies love the way Lavigne, a New Hampshire prep chosen 42nd overall this year, talks about hitting. But his bat does plenty of talking, too.

The Rockies quickly promoted Lambert out of the Eastern League and into the hitter-friendly environment of Albuquerque.