Arizona Diamondbacks at Kansas City Royals

Tue Sep 86:40 PM CT
By JR·2 min read

TLDR: Arizona's grip on the National League's last wild-card spot survived an extra-inning grind in Kansas City, the kind of unglamorous win a contender needs in September.

FINAL · TUE SEP 8, 11:40 PM
5
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3
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ARI
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KC
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Arizona Diamondbacks
  • Won 3 straight, took series opener from KC
  • Fighting for the final NL Wild Card spot
  • Rotation battered by IL all season (Nelson, Gallen, Soroka)
  • Burnes making first start since June 2025 elbow injury
Kansas City Royals
  • Wacha's last start: 6 IP, 3 ER, 7 K, win
  • Took 1 of 3 from Toronto last week
  • 64-81, well out of the playoff picture
  • Caglianone (RF) day-to-day, Garcia not fully healthy

Corbin Burnes (0-0, 0.00) started Tuesday's series finale in Kansas City, his first big-league mound appearance since June of last season, opposite Michael Wacha (9-8, 3.25), who has quietly been the one dependable arm in a Royals rotation gutted by Tommy John surgeries and season-ending injuries all year.

Corbin Burnes
Corbin Burnes
(0-0)·7.84 ERA
2026 · No starts yet
ND
—IP
—ER
—K
—BB
—P
09/08 Lineup
Michael Wacha
Michael Wacha
(9-9)·3.33 ERA
Sep 3 vs Marlins
W
6.0IP
3ER
7K
2BB
96P
09/08 Lineup

Arizona scratched Corbin Carroll from Tuesday's lineup, and Kansas City is already down its best hitter of the summer, Jac Caglianone, shut down with a flexor strain in his throwing elbow. Both clubs took the field short a piece of their best lineup before a pitch was thrown.

Whatever the board said going in, this was two rosters at opposite ends of September: Arizona clinging to the National League's last wild-card spot, Kansas City playing out a lost season in front of a home crowd that still turned out in bigger-than-usual numbers for the finale.

09/07W@Royals5-4
09/06W@Astros3-2
09/05W@Astros4-3
09/04L@Astros1-3
09/02WvsPhillies1-0
09/07LvsDiamondbacks4-5
09/06WvsBlue Jays6-1
09/05LvsBlue Jays3-4
09/04LvsBlue Jays2-9
09/03WvsMarlins7-3

Arizona took 2 of 3 from Houston to get here and had won 3 straight as of Tuesday, its first series win in Houston in over a decade. Kansas City, by contrast, took only 1 of 3 from Toronto in its last set and had lost its most recent game, a familiar shape for a club that has spent most of September looking toward next year.

The injury sheets tell most of the story here. Arizona is still without Zac Gallen and Ryne Nelson, both on the 60-day IL with elbow issues, though Michael Soroka is expected back at some point in this series. Kansas City has lost Cole Ragans, Alec Marsh and three relievers to surgeries that will keep them out the rest of the year. Neither front office was pretending this was a full-strength matchup.

It took extra innings to settle, and the Polymarket chat room noticed — the busiest single stretch of the night landed right as the game turned late, with one poster admitting 'Told yall 90% cashout rule nobody listened' as Arizona pulled away for good. A 14,870-member room, nearly double the season's median crowd, stuck around for all of it.

Diamondbacks 5, Royals 3: Final Score & Odds Recap — Diamondbacks Grind Past Royals As Burnes Returns