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Arizona Diamondbacks News / Arizona Diamondbacks on SI / January 7
Journeyman Reliever was Surprise Contributor for D-backs
The Arizona Diamondbacks' 2025 season was certainly not for the faint of heart. Despite the high expectations of a competitive, playoff-contending team, the D-backs sputtered to the tune of an 80-82 record, missing the Postseason for the third straight year.
Arizona Diamondbacks News / MLB Trade Rumors / December 30
D-Backs Re-Sign John Curtiss To Minor League Deal
The Diamondbacks re-signed reliever John Curtiss to a minor league contract last week (link via Arizona Sports). The righty will presumably get a non-roster invitation to Spring Training.
Arizona Diamondbacks News / Burn City Sports / December 19
Another familiar face re-signs with Diamondbacks on minor league deal
PHOENIX — It looks like the Arizona Diamondbacks are leaning toward bringing back some talent to the desert ahead of the 2026 season. According to Sports Illustrated’s Alex D’Agostino, right-handed reliever John Curtiss has signed a minor league deal with the team.
The 'MLB active doubles leaders' quiz
How many of the active MLB players with 300 or more doubles in their career can you name in five minutes?
Arizona Diamondbacks News / Arizona Diamondbacks on SI / December 18
D-backs Reunite with Reliever to Bolster Bullpen Depth
According to their transaction log page, the Arizona Diamondbacks have reunited with one of their 2025 relief arms, signing right-hander John Curtiss to a minor league deal, assumedly with an invite to big league Spring Training.
The 20 most significant MLB Rule 5 draftees
The Rule 5 draft, held annually at the winter meetings in December, never garners much fanfare, but it has been known to yield some noteworthy transactions.
Arizona Diamondbacks News / MLB Trade Rumors / November 6
Diamondbacks make a flurry of roster changes
Infielder Ildemaro Vargas, catcher James McCann and left-hander Jalen Beeks have elected free agency. Right-handers Austin Pope, John Curtiss and Casey Kelly, left-hander Kyle Nelson and infielder Connor Kaiser were outrighted off the 40-man roster. Arizona’s 40-man roster now sits at 38 players.
Arizona Diamondbacks News / MLB Trade Rumors / November 6
Diamondbacks outright four players off 40-man roster
The Diamondbacks outrighted four players off the 40-man roster, according to the MLB.com transaction log. Right-handers John Curtiss and Casey Kelly, lefty Kyle Nelson, and infielder Connor Kaiser all went unclaimed on waivers.
Arizona Diamondbacks News / Burn City Sports / September 21
Diamondbacks extend save record in win against Phillies
PHOENIX — The Arizona Diamondbacks continued to make history in their win against the Philadelphia Phillies Saturday night, extending their Major League Baseball save record.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / September 15
Diamondbacks' John Curtiss Discusses Meaningful Milestone
After Arizona Diamondbacks right-hander John Curtiss slammed the door on a nail-biting extra-inning victory on Saturday night, he was seen speaking to manager Torey Lovullo on the field.
Arizona Diamondbacks News / MLB Trade Rumors / June 28
Diamondbacks designate right-hander for assignment
The Diamondbacks announced that right-hander Tayler Scott has been designated for assignment. Fellow righty John Curtiss will take Scott’s place on the active roster, as Arizona selected Curtiss’ contract from Triple-A.
The 25 greatest pitching seasons from the modern MLB era
America's favorite pastime has more memorable performances than any sport. As such, figuring out which pitchers had the best seasons ever is no easy task.
Arizona Diamondbacks News / Arizona Diamondbacks on SI / March 5
Unsung D-backs' Reliever Tweaking Arsenal to Compete for Roster Spot
Right-handed reliever John Curtiss wasn't exactly high on the Arizona Diamondbacks' list of potential big league arms coming into camp, but the veteran has been putting together a very solid Cactus League so far.
Arizona Diamondbacks News / MLB Trade Rumors / February 11
Diamondbacks sign pair of relievers to minor-league deals
One is a familiar face, while the other is a new addition to the organization.
Colorado Rockies News / Purple Row / October 30, 2024
Ranking the Rockies: No. 32 & 31, Noah Davis & John Curtiss 
Curtiss is gone, while Davis’ role with the Rockies seems unclear Welcome to the 2024 edition of Ranking the Rockies, where we take a look back at every player to log playing time for the Rockies in 2024.
Colorado Rockies News / Last Word On Sports / August 13, 2024
Colorado Demotes Veteran Reliever to Triple-A
The Colorado Rockies demoted right-handed reliever John Curtiss to Triple-A Albuquerque after he went unclaimed on waivers. At this point in his career, he has the right to become a free agent.
MLB News / Milwaukee Brewers on SI / August 8, 2024
Rockies Designate Ex-Brewers Hurler For Assignment Following Tough Season
The Milwaukee Brewers 2021 bullpen finished the year with a top-ten 4.02 ERA in all of Major League Baseball, and a contributor from that campaign is now on the free agency market.
Colorado Rockies News / Fastball on SI / August 6, 2024
Colorado Rockies Call Up Chasen Shreve, Designate John Curtiss For Assignment
The Colorado Rockies have selected the contract of left-handed pitcher Chasen Shreve from Triple-A Albuquerque, the club announced Tuesday afternoon. Shreve inked a minor league contract with the Rockies on Sunday, three days after he was released from his minor league deal with the New York Yankees.
Colorado Rockies News / MLB Trade Rumors / May 30, 2024
Rockies Outright John Curtiss
The Rockies have sent right-hander John Curtiss outright to Triple-A Albuquerque, per his transactions tracker at MLB.com. That indicates he cleared waivers after being designated for assignment earlier this week.
Colorado Rockies News / MLB Trade Rumors / May 24, 2024
Rockies Select John Curtiss, Matt Carasiti
The Rockies made a pair of bullpen moves before tonight’s matchup with the Phillies. Colorado selected righties John Curtiss and Matt Carasiti onto the MLB roster.
MLB News / New York Mets on SI / January 25, 2024
Former Mets Reliever Agrees with Rockies
Former New York Mets pitcher John Curtiss has agreed to a deal with the Colorado Rockies, per MLB Trade Rumors. Curtiss signed a minor-league deal with the Rockies that comes with an invitation to Major League Spring Training.
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