After dominating the Florida Instructional League and Gulf Coast League as an 18 year-old fresh out of high school, (and getting a taste of Single A as well), this 3rd-round draft choice made the AAA roster as a 19 year-old where he made only 7 starts before getting called up to the Majors at the beginning of June. His team was 31-15 at the time and had a more than serviceable pitching rotation featuring the eventual Cy Young winner that season.
Clearly this young pitcher (Bert Blyleven) had the goods and history shows the right decision was made to bring him up when they did. Still, some risk of failure had to exist with that move, too.
If Blyleven was an 18-year old today signing with the Twins, would he be given as quick a shot to the Majors or would today's process be more deliberative with his advancements?
I surmise it would take Bert at least a full second season in the minors if for no other reason than it would take that long to reach the same amount of innings pitched. Also, money would be a bigger consideration today. Blyleven, a third round pick, said he signed for 10,000 dollars. Jose Berrios, the 32nd player taken in 2012 signed for 1.55 million. Not Byron Buxton money, but still an investment.