Pro Set Metal Mayhem: 1-of-1s and Active Major League Stars in a Single Box

Ripping into a box of 2026 Pro Set Metal Baseball is always an experience. It’s a product known for vibrant designs, sharp die-cuts, and a checklist that mixes the absolute top tier of the prospecting world with legendary names from the history books.

When we sat down to film today's box opening, we knew we had a couple of big hits on our hands. But once we looked at the latest market trends and player promotions for late May 2026, it became clear that this box wasn't just good—it was an absolute monster from top to bottom.

Here is the full breakdown of our latest break, including the massive "diamonds in the rough" that have exploded in value over the last few weeks.

The Headliners: A Rookie Phenom and a Hall of Fame Legend

Every great box needs an anchor, and this one gave us two completely different eras of greatness.

• Konnor Griffin // 1990 Base Auto Orange Prismatic /4: Griffin isn't just a name on a prospect watchlist anymore. He is actively making waves in the major leagues, putting together a stellar month of May. Landing an Orange Prismatic autograph numbered to just /4 of a legitimate Rookie of the Year contender is the absolute definition of a cornerstone hit.
• Wade Boggs // Vintage Auto Gold Laser 1/1: On the complete opposite end of the spectrum, we pulled a flawless 1-of-1 autograph of first-ballot Hall of Famer Wade Boggs. While prospect hunting drives the high-risk, high-reward side of the hobby, a true 1-of-1 cut autograph of a 3,000-hit club member carries a rock-solid floor and timeless appeal for vintage collectors.

The Hidden Gems: Massive Minor League Risers

While the Griffin and Boggs cards steal the initial spotlight, the real story of this box lies in the short-printed parallels of players who are completely tearing up the stat sheets right now.

• Kash Mayfield // 1990 Mini Auto Platinum Lazer 1/1: Talk about perfect timing. Mayfield was just named Pitcher of the Week in the minors and currently holds the lowest opponent batting average in all of Minor League Baseball. Pulling his 1/1 Platinum Lazer autograph right as he establishes himself as the most dominant arm in the developmental ranks is an incredible stroke of luck.
• Eduardo Quintero // 1990 Red/White/Blue Silver Circles 1/1: Do not sleep on this card just because it isn't an autograph. Quintero was recently named the #1 overall prospect in a loaded Los Angeles Dodgers farm system. Finding his 1/1 parallel makes this an elite asset for high-end team collectors and prospectors alike.
• Gage Jump // 1990 Mini Orange Prismatic /4: Jump is on the absolute fast track to the big leagues. Coming off a dominant 7-inning, 9-strikeout scoreless gem in Triple-A, he is knocking on the door of his MLB debut. A /4 parallel of a pitcher about to make the leap means peak liquidity in the current market.

Complete Checklist Depth

What makes a box break truly satisfying is when the middle of the checklist holds its own. This box was packed with low-numbered color and elite insert designs:

• George Wolkow: Hit twice in this box, landing both the Talent Tornado Die-Cut Auto Orange Prismatic /4 and the 1990 Mini Silver Prismatic /10.
• Daniel Pierce: Another beautiful insert pull with the Talent Tornado Die-Cut Blue Prismatic /5.
• Caden Bogenpohl: Adding more ink to the box with a clean 1989 Base Auto Pink Prismatic /7.
• Griff O'Ferrall & Joshua Kuroda-Grauer: Strong draft names appearing in rare color, with O'Ferrall hitting a Mini Green /3 and Kuroda-Grauer landing a Base Orange /4.

Watch the Live Reaction

There is nothing quite like the energy of seeing multiple 1-of-1s and single-digit print runs come out of the same box. We caught the entire break on camera so you can see the cards under the studio lights and check out the clean aesthetics of this year's Pro Set Metal designs.

• Watch the Break on YouTube: https://youtube.com/shorts/v8qMmjO65jE
• Follow the Store Page on Facebook: Facebook

Available in the Shop Tonight

Jumbo boxes are available now for purchase. Which big stars are you going to pull?

In additon, every single card from this historic break—from the Wade Boggs 1/1 to the Konnor Griffin /4 and the low-numbered draft inserts—is heading to our inventory system over the coming days. Whether you are looking to hedge on the next big MLB superstar or add a piece of Cooperstown to your personal collection, you can find the individual listings on our webstore.

What is your favorite pull from this box? Are you chasing the high-upside 1/1 autos like Kash Mayfield, or do you prefer the proven major league production of Konnor Griffin? Let us know your thoughts in the comments section below!