Puerto Rican shortstop Delvin Perez might be the best player in this year's draft class. Perez, who just turned 17 two days before Thanksgiving, has outstanding tools and athleticism, more than just about anyone else in the group, with only immaturity and lack of consistency holding him back right now.

Perez was the star of MLB's 2016 Puerto Rico showcase, held this past week at Pedro Montanez Stadium in Cayey, with more than 130 players playing on four teams in the three-day event. Even with several potential Day 1 picks in the group -- all position players -- Perez was head and shoulders above everyone else, showing 70 speed, plus hands, a plus arm and plus raw power right now, with the broad shoulders to add plenty of muscle to his 6-foot-3, 160-pound (listed weight) frame.

In the field, Perez looks like he'll have no trouble staying at short, as he has the quick feet and hands for the position. He showed he can make the throw from the hole, getting to one ball at the edge of the grass and throwing to first like he was flipping it to the pivot man on the double play, getting the runner (prospect Jose Miranda) by a half-step. He also showed tremendous range the other way, going behind second base to the right field side to start a 6-4-3 double play. He stays too upright while fielding, which costs him some plays that should be routine, but that's entirely fixable with better coaching.

At the plate, Perez can square up a fastball, with a short path to the ball and great extension through contact. The pitching at the event was not good overall, so Perez wasn't substantially challenged -- though he did have some trouble with changing speeds, lunging at some changeups and breaking stuff down. He showed off his raw power in the workout on Wednesday -- before I arrived at the event -- then made plenty of hard contact in his 12 plate appearances over the three-day event. His swing and hand-eye coordination are good enough for him to eventually hit for average, although I think he'd struggle right now in rookie ball because he'll face enough guys who can throw secondary stuff for the occasional strike.

Perez's main problems seem to come down to a lack of focus, which comes back to anecdotal reports about his immaturity. He had a misplay early in the Thursday game and it seemed to affect him the remainder of the day, although he returned Friday morning to put on a display in the field and at the plate, finishing with a triple off the top of the left field wall. While he'll receive the inevitable comparisons to Carlos Correa, who also was just 17 when he was the first overall pick in the 2012 draft, Perez is a very different player; he's faster, better on defense and more of a quick-twitch player, but he's less polished on both sides of the ball and less mature. He's more of an upside play than Correa, with the kind of explosive tools you want to see in a first overall pick, better compared physically to Byron Buxton or Justin Upton at the time of their drafts than to Correa just because the latter shares the same birthplace.

More notes from the Puerto Rico showcase

• Catcher Mario Feliciano played on the same team as Perez and showed the most current hitting ability of any player in the event, attacking fastballs early in the count all week and making a lot of hard contact, with great rotation that should turn into plus game power down the road. He was rough behind the plate, especially receiving, and his plus arm strength was lessened by a slow time from the crouch to release. I see some things a catching coach could work with, but if his hands are just too hard to catch, he may profile better as an offensive first baseman.

• Nathan Torres, another catcher on that same squad, showed the best throwing arm I saw in Cayey, with several pop times below 1.90 and nothing over 2.03. He also didn't receive that well, and while his swing looked sound, it produced no hard contact, so I couldn't begin to tell you if he's a prospect beyond the arm strength. He might be the guy you take in about the seventh round, send out as a catcher for two years to see if the bat develops at all, and put on the mound if he never hits.

• Jose Miranda was another potential Day 1 pick in the event, a very good athlete who has great bat speed and some present raw power but, like Perez, needs a lot of refinement across the board. Miranda can load very deep, giving him some timing issues in getting the barrel into the zone, but it's a very rotational swing, and if he just shortens his path to the ball by loading his hands closer to his body, he could hit for average and moderate or better power in somewhat short order. He's a shortstop now with good hands but probably the actions of a second or third baseman, although with the lack of shortstops in this draft class, he will probably go to a team that sees him having a decent chance of staying at the position. In most years, he'd be the best prospect in Puerto Rico.

• Other names to remember: Alexis Torres, who appeared in Perfect Game's All-American Classic in San Diego last August, could not hit at all this week, mistiming left and right and even struggling a little in the field when he moved from shortstop to second for a game. … Third baseman Kevin Rolon is another young'un who'll be 17 years and 9 months on draft day, with a very projectable 6-foot-3, 165-pound body, and he must have some kind of hand strength given how well the ball already comes off his bat. … Jean Correa, Carlos' little brother, is just 5-foot-10 and 180 pounds right now, so comparisons to his much-bigger sibling will be grossly unfair. He played only first base in the games that I saw, but he can swing the bat a little, with a compact stroke and some signs of pitch recognition. He's normally a shortstop, but without seeing that, I couldn't tell you what kind of prospect he is; if he even projects to stick at second base, there seems like enough bat here to warrant a pick in the top 10 rounds.