This article is part of our MLB Barometer series.
It's been clear for several years now that young players are making more noticeable impacts and making them more quickly than ever. In that vein, three of the featured Risers in this week's Barometer are rookies. Of the trio, however, only Keston Hiura had much hype before the season, and neither Oscar Mercado nor Jose Urquidy were really on the radar in the vast majority of leagues. With no experience above Double-A and no immediately apparent roster spot, even Hiura wasn't much of an option during draft season, finishing with a 573.8 NFBC ADP.
Just because rookies are generally more exciting than ever doesn't necessarily make them easier to draft. Even the most heralded prospects can still struggle while adjusting to the league. On the flip side, advancements in player development have enabled lesser-known young players to quickly emerge as quality options right away. The following table compares the highest-drafted rookie at each position to the top performing rookie according to our earned auction values to demonstrate some of that uncertainty. All columns refer to the player's rank at that specific position.