The Colorado Rockies drafted LHP Tyler Matzek with their first draft pick in the 2009 MLB Draft
With the 11th overall pick of the 2009 MLB Draft, the Colorado Rockies drafted left-handed pitcher Tyler Matzek.
Matzek was drafted out of high school so he made it to the majors a little bit later than the collegiate players in the draft. However, he made his debut in 2014 and he pitched well in 20 games (19 starts), as he had a 4.05 ERA (105 ERA+).
But Matzek started to have the “yips” in 2015 as he had massive control issues. He then had some injuries so he was out of the Rockies system by 2017.
He didn’t return to the majors until 2020 as a reliever with the Braves. He has been great for them since but for the Rockies, it was a draft pick that didn’t pan out.
Even if he did pan out, nobody in that draft has been even close to as good as Mike Trout. The Angels drafted Trout with the 25th overall pick in the draft and he was their second draft pick of the first round.
Trout was drafted out of high school but made his debut in 2011. He won the 2012 AL Rookie of the Year Award, is a nine-time All-Star, an eight-time Silver Slugger Award winner, a three-time AL MVP (2014, 2016, 2019), six more top five AL MVP finishes, and 76.1 rWAR.
You can’t have a better draft pick than that, especially when he’s still only 30 years old.