The Arizona Diamondbacks welcome the San Francisco Giants to Chase Field on Tuesday, June 30 for a 9:40 PM ET first pitch in what shapes up as a pivotal NL West matchup. Arizona will counter with a lineup stacked top to bottom, while San Francisco sends right-hander Landen Roupp to the mound. The Diamondbacks have yet to announce their starting pitcher, but the lineup card alone gives Arizona fans plenty of reason to be optimistic heading into this one.

Pitching Matchup: Landen Roupp Starts for San Francisco

The Giants are going with Landen Roupp, the 26-year-old right-hander who has been working to establish himself as a dependable piece in San Francisco's rotation. Roupp relies on a mid-90s fastball and a sharp slider that can give right-handed hitters fits. The concern for Arizona is matching whatever Roupp brings with a capable arm of their own — the Diamondbacks' pitching assignment remains TBD as of this writing, and that uncertainty is worth monitoring before first pitch.

Arizona Diamondbacks Starting Lineup

• Ketel Marte, 2B
• Geraldo Perdomo, SS
• Corbin Carroll, RF
• Gabriel Moreno, C
• Lourdes Gurriel Jr., DH
• Max Kepler, LF
• Nolan Arenado, 3B
• Pavin Smith, 1B
• Jorge Barrosa, CF

Keys to Watch in Arizona vs. San Francisco

Corbin Carroll at the Heart of the Order

Batting third and playing right field, Carroll is the engine of this offense. When he gets on base and creates chaos, Arizona's lineup flows. Roupp will need to keep Carroll off the basepaths to limit the damage the middle of the order can do.

Nolan Arenado's Impact Down the Lineup

The addition of Nolan Arenado batting seventh is a luxury most teams simply don't have. His presence in the lower third of the lineup forces pitchers to stay sharp well into the batting order. Any lapse from Roupp in the sixth or seventh inning could be costly with Arenado lurking.

Ketel Marte Setting the Table

Leading off, Marte remains one of the most dangerous table-setters in the National League. His ability to work counts, get on base, and drive the ball into the gaps puts immediate pressure on opposing starters. Roupp's first inning will go a long way toward setting the tone of the game.

Arizona's Pitching Answer

Until the Diamondbacks name their starter, the pitching side of this equation carries a question mark. Whether Torey Lovullo goes with a rotation arm or bridges the game with a bulk reliever, the staff needs to keep San Francisco's lineup manageable in a ballpark where the air at Chase Field can carry baseballs.

Prediction

Arizona's lineup depth is real, and having Arenado slotted this low in the order while Marte, Carroll, and Moreno anchor the top half makes the D-backs an uncomfortable out for any pitcher. Roupp is capable, but this Chase Field crowd on a Tuesday night in late June, paired with a lineup this balanced, tips the scale toward Arizona. Diamondbacks win, 5-3.