Rookie fireball reliever Joel Peguero keeps Giants' wild-card flame flickering originally appeared on NBC Sports Bay Area
In a scenario tricky enough to stump the best, rookie right-handed pitcher Joel Peguero let his best work do the talking with everything on the line for the Giants.
With the Arizona Diamondbacks two runs behind and with runners in scoring position, Peguero unleashed his velocity, striking out Tim Tawa and pinch-hitter Adrian Del Castillo to end the sixth inning and, in many ways, assuring the Giants a crucial 5-3 win on Tuesday night at Oracle Park.
Giants manager Bob Melvin recognized the importance of Peguero’s impact out of the bullpen.
“There are certain points of the game that are bigger than others. There was nothing bigger than that today,” Melvin told reporters.
“Obviously, [Willy Adames’] homer and [Dominic Smith’s] play in the ninth inning. But coming in, one out, rookie and with guys on base and getting two punchouts like that threw a lot of momentum back into our dugout.”
Peguero’s big MLB moment was a decade in the making.
Earlier this year, the Giants brought Peguero in this spring as a minor-league free agent. Months later, on Aug. 21 after 10 years in the minors, the 28-year-old made his big-league debut against the Baltimore Orioles.
Now, in the thick of what once was a pipe dream MLB playoff push, Peguero’s heroics trimmed the New York Mets’ wild-card lead over San Francisco to two games.
“What it is is that I have more trust in myself,” Peguero told NBC Sports Bay Area’s Bonta Hill, George Kontos and Sergio Romo on “Giants Postgame Live.”
“I have faith. I have been able to work on that. I trust myself when I go out there. All the years in the minor leagues taught me to be able to trust myself, trust my stuff and attack the zone now that I’m up here.”
In the act of ending the rally, Peguero, who has yet to give up a run since being called up, threw 11 pitches over 100 mph.
The top-5 velocities in baseball today all belong to Joel Peguero. Peguero came into a jam and struck out 2 batters to end a potential rally #sfgiantspic.twitter.com/2qHNOGbBRQ
— Jeff Young (@BaseballJeff1) September 10, 2025
On a night in which Adames hit his 28th home run of the 2025 MLB season and Patrick Bailey went yard for a second straight game, Peguero’s hard-throwing ways didn’t go unnoticed.