The Cardinals have locked up their rookie infielder. The team announced today that they have signed JJ Wetherholt to an eight-year extension that runs through 2034. That means it buys out what would have been his first three free agent years. It is reportedly worth $112.5MM with no option seasons. The deal can max out at $132MM, implying there are $19.5MM in performance bonuses.

It’s one of the largest guarantees in franchise history, trailing only the $130MM Paul Goldschmidt extension in 2019 and the $120MM Matt Holliday free agent deal from 2010. In terms of recent contract extensions around the league for players under one year of service time, this comes in a bit underneath Kevin McGonigle, Konnor Griffin and Roman Anthony. McGonigle got $150MM, Griffin $140MM (over nine years) and Anthony $130MM.

Wetherholt, now 23, has clearly been a key part of the club’s future for a while now. He was the seventh overall pick in the 2024 draft. He then surged through the minors over the remainder of that year and 2025. He became one of the top ten prospects in baseball heading into this year.

Throughout the most recent offseason, it seemed the Cardinals planned on having him break camp with the club in 2026. As part of their pivot to a youth movement/rebuild, they traded away a few veteran players, including infielders Nolan Arenado and Brendan Donovan. That left the second base job open for Wetherholt and he took it. He performed well in the spring and the Cards broke camp with him.

Since then, he has done everything he can to cement himself as a viable big leaguer. He has stepped to the plate 395 times. His 15.4% strikeout rate and 9.6% walk rate are both better than league average. He has hit 13 home runs. He has a .267/.362/.411 batting line and 118 wRC+, indicating he has been 18% better than the league average hitter. He has stolen nine bases without getting caught. He has been credited with 12 Defensive Runs Saved and 16 Outs Above Average at second base. Both of those figures are tops in the majors among second basemen.

Put it all together and FanGraphs has already credited him with 3.6 wins above replacement on the year, with still almost half the season remaining for him to build on that. He’s the favorite to win the National League Rookie of the Year award.

As the Cards pivot to a new generation, Wetherholt is clearly a huge part of it. The Cards have cemented that with this deal. It’s easily the most significant contract of the Chaim Bloom era so far. He just got the job at the start of the most recent offseason and, as mentioned, spent most of the winter trading guys away. The biggest free agent signing was a $12.5MM deal for Dustin May. This is the first extension Bloom has signed since taking the job.

These deals have become all the rage in MLB lately. As shown in MLBTR’s Contract Tracker, there were 16 extensions for guys with under a year of service time from 2006 to 2021. This is the 17th in the past five years. Teams have become very comfortable betting on their top prospects, even with limited big league experience or sometimes none at all. In the case of the Cards and Wetherholt, the club let him get about half a season under his belt before crossing the finish line on a deal. Regardless, he should be a staple of the club well into the next decade.

For Wetherholt personally, he is opting for greater certainty over trying to maximize future earnings. He was on track to reach free agency ahead of his age-29 season. If he continued to put up huge numbers between now and then, he could have been in line for a bigger contract at that time. This deal will push his path to free agency by three years, so he is now slated to hit the open market ahead of his age-32 season. He could still be in line for a nice deal after this extension but position players generally have less earning power in their early-3os compared to their late-20s.

The trade-off, of course, is that he is locking in a massive payday now and cutting off the potential downsides. There are no guarantees in this game and it’s entirely possible that his production falls off or some notable injuries derail his career. With this deal, he will have life-changing money in the bank regardless of how he performs in the next few seasons.

The Cardinals will be hoping this is just the beginning of a great era of the franchise. Despite their ostensible rebuild, they are playing very well this year. They are 48-44 and just three games out of a playoff spot. Young and controllable players like Wetherholt, Jordan Walker, Masyn Winn and Alec Burleson have been part of that success. Prospects like Rainiel Rodriguez, Liam Doyle, Jurrangelo Cijntje and others are on the way. The Cards are betting that there’s a bright future ahead with Wetherholt at the center of it.

Jeff Passan of ESPN first reported that the two sides had agreed to a long-term deal. Jon Heyman of The New York Post first reported the guarantee and eight-year length, as well as the max figure. Photo courtesy of Jeff Curry, William Purnell, Imagn Images