Arizona Diamondbacks vs St. Louis Cardinals
Monday, June 22, 2026
Matchup Analysis
This MLB matchup features Arizona Diamondbacks (39-38 (24-17)) traveling to take on St. Louis Cardinals (41-34 (21-17)) at Busch Stadium, St. Louis, Missouri. On paper, these teams are nearly identical in terms of net scoring margin. Games between evenly matched squads tend to come down to execution and in-game adjustments rather than raw talent gaps.
Scoring could be a challenge for Cardinals (4.6 PPG) against a Diamondbacks defense allowing just 4.6 PPG. The home team will need to find efficient looks to overcome this defensive wall. Diamondbacks averages 4.6 PPG, and the Cardinals defense has been conceding 4.6 PPG. That gap gives the road team a realistic path to putting points on the board. Both teams' offenses closely mirror what the opposing defense allows, suggesting a game that plays close to each team's season averages. The team that gets stops on key possessions will pull ahead.
Playing at home is worth roughly 3.0 points in MLB, giving Cardinals a built-in edge before first pitch. Cardinals is favored by 3.6 points in our projection, a margin that could go either way depending on game flow and shooting. This projects as a grind-it-out affair, with both teams averaging around 5 PPG in typical game environments. Low-scoring games compress margins and make covering large spreads harder.
There's a clear disconnect between our projection and the -1.5 market line. The 2.1-run gap on Cardinals stands out as one of the better edges on today's slate. Factor in our 9 total projection versus the market's 8.5, and this game offers multiple angles worth exploring.
Team Comparison
ARI Diamondbacks
Stat
STL Cardinals
39-38 (24-17)
Record
41-34 (21-17)
Last 10
4.6
PPG
4.6
4.6
Opp PPG
4.6
Current Odds
| Team | Moneyline | Spread | Total |
|---|---|---|---|
| ARI Arizona Diamondbacks | +119 | +1.5 | O 8.5 |
| STL St. Louis Cardinals | -144 | -1.5 | U 8.5 |
Source: DraftKings Updated: Jun 22, 5:08 AM
Opening line: -1.5 / O/U 8.5
Model Projection
| Team | Moneyline | Spread | Total |
|---|---|---|---|
| ARI Arizona Diamondbacks | +267 | +3.6 | O 9.2 |
| STL St. Louis Cardinals | -267 | -3.6 | U 9.2 |
Source: Model Updated: Jun 22, 5:08 AM
Our Picks
Spread
Cardinals (opened at -1.5)
59% Confidence
Total
Pass
Model: 9.2 | Edge below threshold
Key Matchup Factors
**Key Matchup Factors:**
- Cardinals has a +0.0 scoring margin edge
- Home court advantage adds 3.5 points for Cardinals
- Expected scoring: Cardinals ~5, Diamondbacks ~5 (total ~9)
Recent Trends
Cardinals sits at 41-34 (21-17) this season -- a team that can beat anyone on a good night but has dropped games they probably should have won.
At 39-38 (24-17), Diamondbacks has been a middle-of-the-pack team with both impressive wins and puzzling losses.
This matchup will come down to who can impose their style of play. Defensive intensity and rebounding will be key factors in determining which team walks away with the victory.
Matchup Edges
Cardinals
Advantages
- Home field advantage worth 3.0 runs in our model
- Elite pitching allowing just 4.6 RPG
- Net scoring margin of +0.0 RPG per game
Disadvantages
- Limited offense averaging just 4.6 RPG
- Allowing 4.6 RPG on defense leaves room for opponent scoring
- Opponent still holds a 27% model win probability
Diamondbacks
Advantages
- Stout pitching allowing just 4.6 RPG
- Net scoring margin of -0.0 RPG per game
- Model-projected win probability of 27%
Disadvantages
- Playing on the road, sacrificing 3.0 run of home field advantage
- Anemic offense at just 4.6 RPG limits scoring ceiling
- Model win probability of just 27% on the road