In the Spotlight: Alexander Frias, the Higher-Ceiling Piece of the Deal
The Cardinal Chronicle
In the Spotlight: Alexander Frias, the Higher-Ceiling Piece of the Deal
St. Louis, MO
By Ray Mileur
The Cardinals did not just move two expiring arms at the trade deadline. They bought upside.
In Monday’s intra-division deal with Milwaukee, St. Louis sent right-hander Dustin May and left-handed reliever JoJo Romero to the Brewers for two outfield prospects, Alexander Frias and Josiah Ragsdale. For Milwaukee, the trade was about strengthening a contending roster. For the Cardinals, it was about turning short-term pitching pieces into longer-term talent with real ceiling. Reuters reported that May and Romero were both set to become free agents after the season, while Frias and Ragsdale came back to St. Louis as the prospect return.
Frias is the younger, louder, higher-ceiling piece of the deal.
The 18-year-old outfielder from the Dominican Republic signed with the Brewers in January 2025 and quickly became one of the more intriguing young bats in a Milwaukee system already known for identifying and developing international talent. Baseball Savant lists Frias at 6-foot-2 and 177 pounds, batting left-handed and throwing right-handed, with a profile that immediately stands out for his age, frame and raw power potential.
His first season in professional baseball was solid. Frias played 27 games in the Dominican Summer League in 2025 and hit .316 with a .411 on-base percentage and a .400 slugging percentage. That was not a loud debut in terms of home run production, but it showed approach, bat-to-ball ability and enough early feel to move him stateside for his age-18 season.
Then came the breakout.
Frias opened 2026 in the Arizona Complex League and overwhelmed the level. In 32 games, he hit .441/.518/.678 with four home runs, 34 RBIs and 12 stolen bases. That kind of production forced a promotion to Low-A Wilson, where the numbers came back to earth, but not in a way that should scare the Cardinals. Across 28 games in the Carolina League, Frias hit .236/.328/.418 with four home runs and 28 RBIs. Overall in 2026, before the trade, he had produced a .342/.427/.553 slash line with eight home runs, 62 RBIs and 19 stolen bases across 60 games.
That is the proper way to read Frias right now. The complex-league numbers show the upside. The Low-A adjustment shows the work still ahead.
The tools are what make him interesting.
MLB Pipeline’s scouting grades give Frias a 45 hit tool, 55 power, 50 run, 60 arm and 50 field, with an overall 40 grade. Those grades tell the story of a young corner-outfield profile with power and arm strength leading the way. The bat is not yet a finished product, but the raw ingredients are there.
The carrying tool is the power.
Frias has already produced exit velocities as high as 117 mph, which is rare thunder for any teenager, much less one who is still filling out physically. Baseball Savant’s scouting report noted that his swing can be a little flat, which keeps too many of those hard-hit balls on the ground instead of turning them into consistent damage in the air. That is the development challenge. The ball comes off his bat hard enough. The next step is learning how to lift it more consistently without turning himself into a pull-happy, swing-and-miss guesser.
FanGraphs is even more aggressive on the ceiling. In its 2026 pre-trade deadline Top 100 update, FanGraphs ranked Frias No. 42 overall with a 50 future value grade and a dramatic upward trend arrow. Their hitter data listed him with a 116.3 mph max exit velocity, a 105.3 EV90, a 46.7 percent hard-hit rate and only a 3-degree average launch angle. That data captures both the dream and the concern in one line: the contact quality is huge, but the swing plane still needs refinement.
That is where the Cardinals’ player development staff comes in.
Frias does not need to be turned into something he is not. He needs to be developed into the best version of what he already is: a left-handed bat with premium impact potential, enough athleticism to handle the outfield and the arm strength to profile in right field. The Cardinals should not rush him. They should not over-coach the explosiveness out of the swing. The job is to add polish without sanding off the very thing that makes him special.
Defensively, Frias has experience in all three outfield spots, but right field appears to be the most natural long-term fit. Baseball Savant’s report noted that he does not project to have the speed needed to remain in center field, but his arm strength makes him a strong fit in right. The Cardinals assigned him to Palm Beach after the trade, which puts him in the Florida State League and gives St. Louis a chance to begin working with him immediately in its own development system.
There is risk here, and it should not be ignored.
Frias is 18. He has played only 28 games above the complex level. He has not yet proven that the bat will play against more advanced pitching over a long season. He has loud exit velocity numbers, but loud contact alone does not make a major-league hitter. There are plenty of young hitters who can light up a radar gun in batting practice and still struggle once pitchers find holes in the swing.
But this is exactly the kind of risk the Cardinals should be taking right now.
Trading Dustin May and JoJo Romero was not about filling a need for September. It was about converting short-term pieces into long-term upside. May gave the Cardinals innings and flashes of quality. Romero gave them a dependable left-handed bullpen arm. But neither was likely to be part of the next great Cardinals team. Frias might be.
That does not mean he is a sure thing. He is not. Prospects this far away rarely are.
But Frias has the kind of raw ability that can change the complexion of a farm system if it clicks. He brings size, youth, left-handed power, arm strength and real underlying data to support the scouting buzz. That is not a throw-in. That is a legitimate prospect.
The Cardinals have spent the last year talking about building a sustainable core. Deals like this are how that process begins to take shape. Not every prospect acquired at the deadline will become a big-league regular. Some will stall. Some will get exposed. Some will become names we barely remember.
Frias has a chance to be different.
He is not arriving in St. Louis as a finished product. He is arriving as a projectable, high-upside outfielder with thunder in the bat and plenty to learn. The Cardinals are betting on the body, the bat speed and the power projection. They are betting that the swing can be adjusted, the approach can mature and the raw tools can turn into production.
That is a worthy bet.
For Cardinals fans, Alexander Frias is not a player to pencil into Busch Stadium anytime soon. He is one to follow closely in Palm Beach, then hopefully Peoria, Springfield and beyond.
This is not about instant gratification.
This is about upside.
And in a deadline deal built around two short-term pitchers, the Cardinals found a young outfielder with enough upside to make this trade worth watching for years.
The Cardinal Chronicle, in association with Gateway Sports & MiLB Today
Preserving the Past, Promoting the Present, and Projecting the Future.
Check out The Cardinal Chronicle for more St. Louis Cardinals coverage, daily farm reports, prospect updates and old-school baseball commentary:
www.cardinalchronicle.com
Photo Credit: Alexander Frias, St. Louis Cardinals | MLB