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On YouTubeArizona Diamondbacks News / Arizona Diamondbacks on SI / April 27
Concern Level for D-backs Closer Elevates with Steep Velocity Loss
Justin Martinez has an electric arm. So much so that the Arizona Diamondbacks signed him at the start of the season to a five-year, $18 million dollar contract extension.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / April 25
Diamondbacks Pitching Health Updates for Braves Series and Beyond
Arizona Diamondbacks reliever A.J. Puk is still waiting on feedback from other opinions on his elbow MRI and there is no decision yet as to the future course of action.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / April 23
Why Hasn't Justin Martinez Been Pitching for the Diamondbacks?
Justin Martinez was seen bounding out of his locker, glove in hand Monday afternoon, when reporters asked if they could speak with him. He declined, as he was on his way out to the field for the 3:15 Reliever Throwing Program that was on Diamondbacks schedule.
The 'Most 40 home run seasons in MLB history' quiz
How many of the 50 MLB players with three or more 40 home run seasons can you name in six minutes?
Arizona Diamondbacks News / Arizona Diamondbacks on SI / April 5
These Three Diamondbacks Pitchers are Hot to Start 2025
The Arizona Diamondbacks are currently off to a strong 5-3 start to the young 2025 season and a big reason for that is some gutsy pitching performances from a few key arms.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / March 24
D-backs' Mike Hazen, Justin Martinez Discuss Contract Extension
On Friday, March 21, the Arizona Diamondbacks and right-handed flamethrower Justin Martinez agreed to a five-year, $18 million contract extension, buying out two years of Martinez's arbitration, and securing his financial future, as well as his future with the club.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / March 23
Justin Martinez Feels Safe, at Home with Diamondbacks
Arizona Diamondbacks fireballing right-hander Justin Martinez sat at his locker with his headphones on, listening to music, getting his gear on as he prepared for the day.
Arizona Diamondbacks News / MLB on ClutchPoints / March 23
23-year-old star gets 5-year contract as he competes for Diamondbacks closer role
The Arizona Diamondbacks are making their final preparations for the 2025 campaign, where they will be hoping to emerge as a sneaky playoff contender in the loaded National League West.
Arizona Diamondbacks News / Burn City Sports / March 22
Arizona Diamondbacks sign closing pitcher to massive new contract
The Diamondbacks have agreed to a 5-year, $18 million dollar contract with relief pitcher Justin Martinez. Solidifying a closer for the future. There was a bunch of praise for Martinez, as D-backs bullpen coach Wellington Cepeda mentioned, “He’s worked his tail off during the offseason to be more consistent.” (per: Arizona Sports).
Arizona Diamondbacks News / Arizona Diamondbacks on SI / March 21
Torey Lovullo Discusses Justin Martinez and Ildemaro Vargas
Arizona Diamondbacks manager Torey Lovullo touched on a few topics during the pregame press conference in Maryvale prior to the game against the Brewers.
Arizona Diamondbacks News / MLB Trade Rumors / March 21
Diamondbacks agree to long-term extension with impressive pitcher
He has a limited major league track record but has impressed in that time.
Arizona Diamondbacks News / MLB Trade Rumors / February 26
Who will emerge as the Diamondbacks' closer on Opening Day?
The Diamondbacks entered the offseason in search of a new first baseman, a closer and some right-handed thump in the lineup, among other items on the to-do list.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / February 17
Diamondbacks DFA Reliever, Make Signing Official
On Monday, the Diamondbacks officially signed the right-handed reliever, Kendall Graveman. In a corresponding move, righty reliever Seth Martinez was designated for assignment.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / February 12
Diamondbacks Flamethrower Looking to Build on 2024 Success
Pitchers and catchers have reported to Salt River Fields as the Arizona Diamondbacks begin Spring Training. Among those looking to take a leap in 2025 is right-handed flamethrowing reliever Justin Martinez.
Arizona Diamondbacks News / Last Word On Sports / February 12
Diamondbacks Invite Seth Martinez to Spring Training
The Arizona Diamondbacks have invited Seth Martinez to Spring Training. The Arizona-born right-handed pitcher was claimed off waivers from the Houston Astros back in November.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / January 27
How Much Will Seth Martinez Contribute to the Diamondbacks in 2025?
As we continue through our series of 2025 Diamondbacks projections we take a look at newly acquired Seth Martinez. The veteran right-hander will join Arizona's bullpen and could play a key role in 2025.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / January 22
As Diamondbacks Free Agent Reliever Options Dwindle, Who's Left?
The Arizona Diamondbacks entered the 2024-2025 offseason with the stated goal to add to their bullpen. Specifically they'd like to add a reliever with high-leverage/closing experience.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / January 11
Diamondbacks 2025 Player Projections: Justin Martínez
This article is part of a series reviewing the projections for each member of the Arizona Diamondbacks 40-man roster, as well as select prospects and non-roster invitees.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / November 8
Arizona Diamondbacks 2024 Player Review: Justin Martinez
This article is part of a series chronicling the individual seasons of players who appeared for the Arizona Diamondbacks in 2024. Reviews for players who still have rookie eligibility for 2025 will appear in our prospect season reviews.
Arizona Diamondbacks News / Arizona Sports / September 5
Checking in on Justin Martinez, A.J. Puk as D-backs’ bullpen works through transition 
SAN FRANCISCO — The Arizona Diamondbacks’ bullpen transitioned over the past month after moving Paul Sewald out of the ninth inning, favoring 23-year-old Justin Martinez in the de facto closer role.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / August 30
Introducing Landon Sims, a Hillsboro Hop on the Rise
The Arizona Diamondbacks might already have a potential dominant closer in Justin Martinez but that doesn't mean they should stop developing closers. One of the top D-backs prospects is Landon Sims, a pitcher that has the moxie and makeup to handle late innings and become a closer.
Arizona Diamondbacks News / Yardbarker / August 7
Young Diamondbacks reliever has become an X-factor
Making 10 appearances for the Arizona Diamondbacks in 2023 posting a 12.60 ERA in 10 innings pitched, reliever Justin Martinez has been one of the most underrated relief pitchers in the MLB in 2024.
MLB News / Field Level Media / May 30
J.D. Martinez's tiebreaking homer powers Mets past D-backs
J.D. Martinez hit the tiebreaking solo homer in the eighth inning Thursday night for the host New York Mets, who earned a much-needed win by edging the Arizona Diamondbacks 3-2 in the opener of a four-game series.
Arizona Diamondbacks News / Arizona Sports / May 10
Diamondbacks’ Justin Martinez continues to show positive signs during loss to Orioles
Young right-handed pitcher Justin Martinez’s reliability in the Arizona Diamondbacks’ bullpen is becoming less of a fantasy and something to monitor. Manager Torey Lovullo called his name in a higher leverage moment than usual Friday at the Baltimore Orioles on a nationally-televised stage against the American League’s best team.
Arizona Diamondbacks News / Burn City Sports / February 24, 2024
Justin Martinez Brings the Heat Against the Rockies
While he did allow a run on three hits and a walk, Justin Martinez made sure to bring the gas against the Colorado Rockies in the Diamondbacks 2nd spring training game.
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