The Arizona Diamondbacks enter the final month of the 2026 regular season half a game ahead of the San Diego Padres for the National League's final Wild Card position. Arizona is 73-65, while San Diego is 72-65. For anyone following Arizona sports betting, the narrow margin leaves little separation between the two clubs as September begins.
Head to Head Could Decide the Race
Arizona and San Diego have split their first 10 meetings, leaving the season series tied 5-5. MLB's postseason tiebreaker rules use head to head record as the first tiebreaker between teams that finish with the same winning percentage. The clubs will meet three more times in San Diego from September 25-27 to close the regular season.
Those final three meetings could determine the season series tiebreaker if Arizona and San Diego finish with identical records. The D-backs have identified the September matchup as a final showdown with the Padres in the Wild Card race.
Marte Nears His Return
Ketel Marte was placed on the restricted list August 17 after he did not report to Fenway Park for Arizona's game against Boston. He was reinstated from the restricted list and placed on the 10-day injured list August 20 with left knee inflammation. The Phillies series beginning August 31 is his expected return window.
Arizona also acquired Lars Nootbaar from the St. Louis Cardinals on August 3, sending right handed pitcher Daniel Eagen, left handed pitcher Sandro Santana and a player to be named later to St. Louis. The D-backs activated Nootbaar August 4. Nootbaar gives Arizona another left handed hitting option in the outfield alongside All-Star Corbin Carroll, while Jordan Lawlar and Tim Tawa provide additional young position players as the club enters the final month. The D-backs' current roster lists all four players.
September Schedule
The D-backs begin September at home against Philadelphia in a series running August 31 through September 2, followed by road series at Houston from September 4-6 and Kansas City from September 7-9. The D-backs then host the Yankees from September 18-20 as part of the club's 25th anniversary celebration of its 2001 World Series championship, with a full team reunion scheduled for September 19.
The regular season then ends with three games at San Diego from September 25-27. That closing series could have major implications for the Wild Card race, including for anyone tracking Arizona Diamondbacks odds.





