MJ Melendez's Tenure With Royals Officially Ends

On Friday, the Royals announced two official non-tenders: reliever Taylor Clarke and outfielder MJ Melendez. The move puts their current 40-man roster at 38.

The Clarke move was a bit surprising, especially since he wasn't expected to command much in arbitration, and he is coming off a solid past season with the Royals.

After spending two seasons in Kansas City in 2022 (4.04 ERA) and 2023 (5.95 ERA), he returned to the Royals and thrived in a middle-innings reliever role. In 51 appearances and 55.1 IP, he posted a 3.25 ERA, 0.85 WHIP, and 17% K-BB%. However, his FIP was 3.97, and while he indeed sported excellent stuff metrics with the Royals last year (104 overall TJ Stuff+), he struggled to generate whiffs, and his xwOBACON was higher than one would want.

With the acquisition of Alex Lange this week, it seemed like the Royals felt Clarke's role was expendable. His lack of Minor League options also gave him less flexibility in Spring Training.

However, the bigger transaction of the day was the release of Melendez, a 2017 second-round pick and former top prospect who advanced through the Royals' farm system with Bobby Witt Jr. 

Melendez Showed Early Promise With the Royals

Drafted and initially developed as a catcher, Melendez showed excellent power as a prospect in the Royals system, especially after the pandemic.

Initially, he had a brutal campaign in High-A ball in 2019, hitting .163 with a .571 OPS and 39.4% K rate in 419 plate appearances. To make matters worse, he only hit nine home runs that season. While the park factors of Wilmington didn't help, the lack of power was disappointing, especially since that was his calling card when drafted out of high school.

The Royals changed up their hitting development after the 2019 season, bringing on Alec Zumwalt and Drew Saylor as hitting coordinators. Melendez was a success story of the new team, absolutely thriving in 2021.

Across Double-A and Triple-A ball, he led the Minor Leagues in home runs with 41, he lowered his K% to 21.7%, and improved his OPS to 1.011. He was also named Offensive Player of the Year that season by Minor League Baseball.

As a result, Melendez became a Top-100 prospect in baseball heading into 2022, ranking 42nd by Baseball America, 51st by MLB Pipeline, and 32nd by Baseball Prospectus. 

When Melendez made his debut in 2022, the Royals were looking for a spark in what would be manager Mike Matheny's last season. He provided exactly that, spending time as the Royals' leadoff hitter that season. In 537 plate appearances, he hit 18 home runs, collected 62 RBI, scored 57 runs, and posted an OPS of .706 and a wRC+ of 97. Unfortunately, poor defense behind the plate and in the outfield (where he rarely played before he arrived in Kansas City) resulted in a -0.6 fWAR, a microcosm of what was to come in the next three years with the Royals.

Power Potential, But Inconsistent Results in Kansas City

Over the next two seasons, Melendez was a regular outfielder for the Royals, moving away from catcher completely. Here's a look at what he did in 2023 and 2024:

• 2023: .235/.316/.398, 10.3% BB%, 28.2% K%, 16 HR, 56 RBI, 93 wRC+, 0.4 fWAR in 602 PA.
• 2024: .206/.273/.400, 7.8% BB%, 25.1% K%, 17 HR, 44 RBI, 86 wRC+, -0.2 fWAR in 451 PA.

The home run power was certainly there, and even in his down season in 2024, he posted a .194 ISO, a career-high. Unfortunately, strikeout and contact issues (career 71.6% contact rate, 79.1% Z-Contact%) deflated his batting average and his overall performance, as illustrated by sub-100 wRC+ marks. 

In 2025, Melendez worked with Witt's hitting coach and tried to revamp his entire swing. The change was the big story in Royals camp in Surprise, Arizona, that Spring Training. Unfortunately, the change did more harm than good.

In 23 games and 65 plate appearances, Melendez slahed .083/.154/.167 with 4.6% BB%, 35.4% K%, -14 wRC+, and -0.6 fWAR. To make matters worse, many of the endearing qualities he had as a hitter, such as max exit velocity and barrel rate, plummeted dramatically last season, as illustrated in his TJ Stats metrics.

Based on this slow start, the Royals optioned Melendez to Triple-A, and he pretty much spent the entire season down in Omaha. The numbers were much better with the Storm Chasers. In 107 games and 480 plate appearances, he hit 20 home runs, scored 70 runs, collected 64 RBI, stole 20 bases, and hit .261 with an .813 OPS.

Unfortunately, many of the same contact problems he had with the Royals persisted in Omaha, which explains why he didn't receive much of an opportunity with Kansas City after being sent down (he was only called up once at the end of July, and he only played in seven games before going back down).

There were some incentives to keep Melendez for at least another season in Kansas City.

He still holds a Minor League option for next season. Additionally, he'll be 27 in 2026 and is widely liked by players in the organization, especially young homegrown players like Witt, Vinnie Pasquantino, and Michael Massey. However, it seems his expected arbitration price tag, estimated at around $2.2 million, was a bit too high for a guy who wasn't guaranteed any playing time at the Major League level next season. 

What is Melendez's Outlook in 2026 and Beyond?

Melendez will likely get picked up by a team this offseason, though it probably will be a Minor League deal with an invite to team camp. He has a history of hitting the ball hard, and a more advantageous home run park could help him boost his offensive production. For his career, he has a 91.7 average exit velocity, a 10.1% barrel rate, and a 46.2% hard-hit rate. Those are batted-ball numbers that would intrigue any team.

The big question from now on will be whether Melendez can hone his discipline at the plate, which deteriorated with each season at the MLB level.

After posting a 0.50 BB/K ratio in his rookie season in 2022, it fell to 0.36 in 2023, 0.31 in 2024, and 0.13 in 2025. A significant contributor to that was an increasing O-Swinig% during those last three seasons. After posting just a 24.4% O-Swing% in 2022, it was 27.4% in 2023, 29.9% in 2024, and 31.6% in 2025. 

Thus, it's not a surprise that his swing-and-miss rates remained well above-average (and not in a good way) in the past three seasons, as illustrated in his rolling swing-and-miss chart via Savant.

Melendez has the opportunity to pull a Ryan O'Hearn (another homegrown player who showed initial promise but disappointed in Kansas City) and turn things around in new surroundings. The talent is undoubtedly there, and this wasn't an easy decision for Royals GM JJ Picollo, especially considering Melendez was such a high draft pick.

That said, it was evident that Melendez's tenure in Kansas City was done, and he needed a fresh start.