The Arizona Diamondbacks host the Miami Marlins at Chase Field on Tuesday, September 15, 2026, with first pitch scheduled for 9:40 PM ET. Arizona turns to right-hander Michael Soroka against Miami's Janson Junk in a regular-season contest that gives the D-backs another opportunity to build momentum at home in the final stretch of the 2026 campaign. Tonight's game is available locally on DBACKS.TV and Arizona Sports 98.7 FM.

Pitching Matchup: Michael Soroka vs. Janson Junk

Soroka gets the ball for Arizona, looking to give the D-backs the kind of length and efficiency a late-season home start demands. Soroka has shown durability throughout his career, and this is a spot where Arizona needs innings from their starter — keeping the bullpen fresh matters more with each passing week in September.

On the other side, Miami sends Janson Junk to the mound. Junk has bounced between roles during his big-league career, and facing an Arizona lineup with legitimate punch top to bottom is a genuine test. The Marlins are not in a position to compete for a postseason berth this season, which makes this a development opportunity for their pitching staff as much as anything else.

Arizona Diamondbacks Starting Lineup

• Lars Nootbaar — LF
• Ketel Marte — 2B
• Gabriel Moreno — C
• Geraldo Perdomo — SS
• Corbin Carroll — RF
• Nolan Arenado — 3B
• Jesús Sánchez — DH
• Pavin Smith — 1B
• Jordan Lawlar — CF

Keys to Watch Against Miami

Ketel Marte Sets the Table

Batting second, Marte is the engine of this offense. When he gets on base and works counts, this lineup becomes significantly harder to manage for opposing pitchers. If Marte is seeing the ball well early, Junk is going to have a long night.

Nolan Arenado Adds Veteran Depth

Arenado slotting in at third base and hitting sixth gives this lineup a legitimate threat even deep in the order. His presence means Junk cannot afford to cruise through the middle of the lineup and exhale — there is no soft landing spot.

Soroka's Efficiency and Pitch Count

The D-backs benefit most when Soroka works efficiently through six-plus innings. A short outing would put pressure on a bullpen that has to stay ready for the final weeks of the regular season. Watch his first-inning rhythm as a barometer for how the night goes.

Corbin Carroll's Lineup Position

Carroll batting fifth instead of his traditional leadoff spot is worth noting. Whatever the reasoning behind tonight's construction, his speed and on-base ability remain a weapon anywhere in the order. A Carroll on base with Arenado due up is a problem for any pitcher.

Prediction

This matchup sets up favorably for Arizona on paper. The D-backs have a deeper, more experienced lineup than what Miami is rolling out, and Soroka at home in a late-season start against a non-contending club is a situation where Arizona should be able to control the game. Expect Soroka to deliver a quality start and the Arizona offense to do enough damage early against Junk to make this one comfortable by the middle innings. Diamondbacks win, 5-2.