MLB Rookie Rankings - Which young star has impressed the most through one month?

When four of the top 10 prospects in MLB started the season in the majors on Opening Day, there was buzz that this could be one of the top rookie classes of all time. One month into the season, that hasn't exactly been the case — but there are some first-year players standing out from the crowd.

Which one tops the list of the 10 best through the first week of May?

We asked ESPN MLB experts David Schoenfield, Bradford Doolittle and Kiley McDaniel to rank their top 10 rookies, in addition to detailing what each one has done so far. They've also predicted the rest of each player's 2022 season, as well as their long-term outlooks.

What he's done so far: Replacing Carlos Correa is no easy ask for a rookie, but Pena has excelled on both sides of the ball. He came up through the minors with a strong defensive reputation and already looks like a Gold Glove candidate, leading the major league among shortstops in defensive runs saved, plus a 97th percentile ranking in Statcast's outs above average. The bat has been the bigger surprise as he's already slammed six home runs with Statcast measurements to back up the power, ranking well above average in both hard-hit rate and barrel percentage. — Schoenfield

Predicting the rest of his 2022: Pena has already shown he can barrel up fastballs and generate elite exit velocity when he does so. He's likely to start seeing more breaking and offspeed stuff, against which he hasn't done much so far. Pena will have to show he can adjust, so there might be some up and down periods, but the power on contact is real and his defense means he's going to be adding value no matter what he's doing at the plate. — Doolittle

The long-term outlook: Pena has always been a strong defensive shortstop and