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Diamondbacks @ Rays discussion

Diamondbacks @ Rays discussion

ST PETERSBURG, FLORIDA - FEBRUARY 28: A general view of racing during the NASCAR Craftsman Truck Series OnlyBulls Green Flag 150 at Grand Prix of St. Petersburg on February 28, 2026 in St Petersburg, Florida. (Photo by David Jensen/Getty Images) | Getty Images
Jim McLennanSat, June 27, 2026 at 9:30 PM UTC·3 min read

Victor Mesa – RF

LuJames Groover – 1B

Tommy Troy – CF

Yesterday’s defeat was Zac Gallen’s seventh loss of the year, and dropped the team to 6-11 when he takes the mound. It got me thinking, which starter in franchise history was the “biggest loser”? Before we get to that, I have to say that the single-season record for losses is one which never crops up in “unbreakable records”, but it probably should. In 1883, John Coleman of the gloriously-named Philadelphia Statistics lost 48 times. Admittedly, he did start 61 of the team’s 99 games that year, and threw 59 complete games. The Statistics also went 17-81 that year. Wasn’t all on the pitching, as the team collectively hit three home-runs. Anyway…

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To find Arizona’s loss leaders, you need to go back a bit. Rodrigo Lopez and Brandon Webb both lost sixteen games, in 2010 and 2004 respectively. The latter is impressive, because Webb had an ERA+ of 125, so was by no means a bad pitcher. That same year, Casey Fossum had 15 L’s and Randy Johnson 14 (coming second in Cy Young voting). The team were simply not very good. That records may be hard to beat, with starting pitchers now less likely than ever to get the decision, as they pitch less far into games. But that same year, the D-backs overall lost 23 games Webb started, which is the most defeats in a season by any Arizona starting pitcher.

However, they still won 12 times, giving a team W% of .343 when he took the mound. Lopez was slightly worse. He made 33 starts, and Arizona lost 22 of them, a team W% of .333. But the record holder appears to be Fossum. Over his 27 starts during that disastrous 2004 campaign, Arizona won just six, a team W% of .222. If Gallen gets another 17 starts, he would need to go 1-16 the rest of the way to end up with a lower team W% than Fossum. But Gallen may be the recent record holder already. In 2021, he made 23 starts, and the D-backs went 6-17 in them, for a .260 team win percentage.

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Ketel Marte – 2B

Yandy Diaz – DH

Geraldo Perdomo – SS

Jonathan Aranda – 1B

Corbin Carroll – RF

Junior Caminero – 3B

Gabriel Moreno – C

Adrian Del Castillo – DH

Chandler Simpson – LF

Nolan Arenado – 3B

Cedric Mullins – CF

Max Kepler – LF

Taylor Walls – SS

Richie Palacios – 2B

Hunter Feduccia – C

Jose Cabrera – RHP

Michael Grove – RHP

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