Kansas City Royals vs Arizona Diamondbacks Prediction and Picks, September 8, 2026

The bet on the total runs going under 8.5 at +129 looks promising. The Royals have been scoring just a bit more than their opponents lately, averaging 0.2 runs more over the last 12 games. On the other hand, the Diamondbacks have struggled a bit, averaging 0.3 runs less than their opponents in that same timeframe. When facing left-handed pitchers, the Royals have a decent batting average, but the Diamondbacks have been even better against lefties this year. The big risk here is that both teams have been hitting well lately, and they could surprise us. But with our numbers suggesting a combined total of about 6.7 runs, it feels like a good spot to take the under.

Kansas City Royals vs Arizona Diamondbacks: Ketel Marte Under 1.5 Batter - Total Bases (-125)

Ketel Marte has struggled lately, averaging no hits in his last three games. The Kansas City Royals have been playing well, scoring a bit more than their opponents lately. Against left-handed pitchers, the Royals have a solid defense, which could make it tough for Marte to find his rhythm at the plate. While Marte has hit well against lefties this season, the Royals' recent form suggests they can keep him in check. With the way he's been performing, betting on him to get under 1.5 total bases seems like a good chance. Just remember, he might surprise us, but he hasn't shown much lately.

Kansas City Royals vs Arizona Diamondbacks: Salvador Perez Under 0.5 Batter - Hits (+170)

The odds for Salvador Perez to get under half a hit are tempting at +170. The Kansas City Royals have been scoring just a bit more than usual lately, but Perez hasn't been hitting much. He's had no strikeouts in his last three games, which is good, but he might not get many chances against the Arizona Diamondbacks' solid pitching. The Diamondbacks have been struggling a bit, but they've done well against left-handed pitchers this year. With Perez facing a lefty and his team not needing him to hit a lot right now, this could be a tough game for him. Plus, the Royals overall have come out just slightly ahead in their recent games, which adds some risk since the teams are pretty close.

Kansas City Royals vs Arizona Diamondbacks: Ketel Marte Under 1.5 Batter - Hits (-263)

Ketel Marte has struggled at the plate recently, not getting any hits in his last three games. The Kansas City Royals have been doing well, scoring slightly more than their opponents on average, and they've held up against left-handed pitchers. The Arizona Diamondbacks, while also winning some games, have not been great at scoring against lefties. Considering Marte's recent performance and the way the Royals have pitched, betting on him to get less than 1.5 hits seems solid. The biggest risk is that Marte has been known to turn things around quickly, but right now, it looks like he might have a tough time against the Royals' pitching.

That is our read — no bet on this board is a sure thing. Prices can move before you get on, so check the board at your bookmaker. Bet what you can afford to lose. If betting stops being fun, take a break.