MLB's top prospect Konnor Griffin shines in his debut, hitting a double in his first at-bat to help the Pirates win.

During the Pittsburgh Pirates' home opener against the Baltimore Orioles at PNC Park today, baseball's most talked-about rookie Konnor Griffin quickly made his presence felt in the batter's box with only five pitches. Starting as the seventh batter and shortstop, Griffin drove in a run with a double in his very first Major League at-bat, contributing to a four-run second inning for the Pirates, who eventually won 5–4 in front of a crowd of 38,986.

“It was amazing,” Griffin said, “and winning the game made it even better. This is definitely one of the best days of my life.”

Griffin is widely regarded as a five-tool player. This season, in five games at Triple-A Indianapolis, he posted a slash line of .438/.571/.625. Last year, over 122 games, he hit .333 with 21 home runs, 94 RBIs, and 65 stolen bases, earning Baseball America’s Minor League Player of the Year award. The shortstop was selected ninth overall in the 2024 MLB draft.

“Everything was incredible,” Griffin said. “Running onto the field, hearing my name announced—I tried to stay present. I almost felt like my feet weren’t touching the ground, but I focused on each step and savored the moment.”

Griffin, who won’t turn 20 until April 24, is the first teenage position player to debut in the Major Leagues since Juan Soto’s debut with Washington in 2018. He is also the Pirates’ first teenage debutant since Aramis Ramirez in 1998.

Here is a breakdown of his Major League debut by at-bat:

First at‑bat, second inning

In his first Major League plate appearance, Griffin connected on a 1‑2 curveball from Orioles starter Kyle Bradish, driving the ball into the gap in left‑center field with an exit velocity of 105.8 mph according to Statcast. Two pitches later, Jared Triolo’s single to right field brought Griffin home.

After Ryan O’Hearn walked to start the inning, Griffin’s double ignited a four‑run rally in the second, giving Pirates starter Mitch Keller a 4‑0 lead. Following Triolo’s RBI single, Henry Davis and Oneil Cruz also contributed RBIs in the same inning.

“That was explosive. He’s just that kind of player—an explosive talent,” Keller said. “He swung and missed twice earlier, but nobody doubted he’d bounce back. Man, he really did it and sparked a huge rally for us. I can’t say enough about him.”

That double made Griffin the first teenager to record a hit in his Major League debut since Jurickson Profar homered for the Rangers on September 2, 2012. He also became the youngest Pirates player to get a hit in his debut since Bill Mazeroski in 1956. Coincidentally, the late Pirates Hall of Famer was honored before the game, and his son Darren Mazeroski—the scout who signed Griffin after the 2024 draft—was present.

“He was a great player,” Griffin said. “Being listed alongside him, and having Darren scout me… Darren is why I’m here. He believed in me and gave me this chance. It’s really special, and I’ll always cherish it.”

Second at‑bat, fourth inning

Griffin reached base again in the fourth inning, drawing a five‑pitch walk to start the frame. He advanced to second on another single by Triolo to right field, but was later tagged out at third when Davis grounded into a double play.

At 19 years and 344 days old, Griffin is the youngest Pirates player to draw a walk in his Major League debut since Aramis Ramirez (then 19 years, 335 days) on May 26, 1998. Griffin is also the fourth teenager to both walk and record an RBI in his debut (since RBIs became an official stat in 1920), following John Paciorek and Rusty Staub in 1963, and Johnny Callison in 1958.

Third at‑bat, fifth inning

With two outs and runners on first and second, Griffin struck out in the bottom of the fifth for his first official out. Despite the strikeout, he showed impressive pitch recognition and discipline—two pitches earlier he successfully overturned a strike call via the first ABS challenge of the game.

Through his first three plate appearances, Griffin saw 17 pitches.

“That was a key moment,” manager Don Kelly said. “Griffin had the awareness to challenge that call and stay in the at‑bat. It was fantastic.”

Fourth at‑bat, eighth inning

Orioles reliever Rico Garcia induced a ground ball to the pitcher from Griffin in his final at‑bat of the game. Griffin finished with 1 hit (a double), 1 walk, and 1 run scored in his debut.

Though the packed crowd remained energetic throughout the nine innings, there were four moments during Griffin’s at‑bats when the noise suddenly dropped, as over 38,000 fans held their breath waiting to see what the city’s new star would do next. Kelly believes that if the team hopes to return to the playoffs for the first time since 2015, they’ll need to learn to play in such an atmosphere.

“It was really cool,” Kelly said. “There’s excitement, anticipation, then it goes quiet. Honestly, that’s what playoff baseball is about—learning to handle those moments of intense noise followed by sudden silence, and continuing to compete through it.”

If the Pirates end up playing meaningful games in October, Griffin will undoubtedly play a significant role.