Oakland Athletics vs Arizona Diamondbacks Prediction 7/21/2026 Today’s MLB Picks

In this article, we will formulate an Athletics vs Diamondbacks Prediction for this MLB matchup on Tuesday, July 21st in the second game of this series. Let’s take a look at the prediction for this MLB matchup.

Arizona Diamondbacks Preview

The Arizona Diamondbacks have a 51-49 record this season and are sitting in the 2nd place of the NL West. They have a 29-22 home record and are coming off a 2-5 home loss against the Athletics. They will face the Nationals and the Pirates next.

The Arizona Diamondbacks have a .237 batting average this season, .308 OBP and .387 Slugging percentage. Arizona’s pitching staff has a 4.22 ERA and 1.29 WHIP. Ketel Marte is the team’s best hitter with a .258 batting average, leads the team in RBI with 58, and adds a team-high 18 home runs.

The Diamondbacks have not yet announced a starting pitcher for this game.

Athletics Preview

The Athletics have a 43-57 record this season and are sitting in the 4th place of the AL West. They have a 23-27 away record and are coming off a 5-2 road win against the Diamondbacks. They will face the Twins and the Red Sox next.

The Athletics have a .247 batting average this season, .324 OBP and .406 Slugging percentage. Oakland’s pitching staff has a 5.29 ERA and 1.48 WHIP. Nick Kurtz is the team’s best hitter with a .266 batting average, adding a team-high 66 RBI. Shea Langeliers adds a team-high 22 home runs.

Jack Perkins (R) is the projected starting pitcher for the Athletics, and he has a 2-5 record, 6.87 ERA and 1.44 WHIP.

Athletics @ Arizona Diamondbacks Betting Trends: July 21, 2026

• Probable Starting Pitcher: Kohl Drake      Record this season: –      ERA: –
• Home Record: –
• Last 5 against Athletics: –

Why the Arizona Diamondbacks will win

• The Athletics have lost eight of their last nine road games.
• The Diamondbacks have won six of their last seven games after playing the previous day.
• The Athletics have failed to cover the run line in seven of their last eight games following a win.
• The Diamondbacks have covered the run line in four of their last five games following a loss.
• The Athletics have lost the first inning in each of their last five Tuesday games against opponents that held a winning record.
• The Athletics have trailed after 3 innings in three of their last four games against National League opponents that held a winning record.
• The Athletics have trailed after 5 innings in five of their last six road night games.

• Probable Starting Pitcher: Jack Perkins      Record this season: 2-5      ERA: 6.87
• Road Record: 1-3
• Last 5 against Diamondbacks: 0-1

Why the Athletics will win

• The Diamondbacks have lost each of their last six games against American League opponents.
• The underdogs have won each of the last three games between the Athletics and Diamondbacks.
• The Diamondbacks have failed to cover the run line in each of their last six games against American League opponents.
• The road team has covered the run line in seven of the Diamondbacks’ last eight games.
• The Diamondbacks have trailed after 3 innings in each of their last four night games against American League opponents that held a losing record.
• The Diamondbacks have trailed after 5 innings in each of their last four games against American League opponents.

Total Runs Facts

• Each of the Diamondbacks’ last five games against American League opponents have gone UNDER the total runs line.
• Five of the Athletics’ last six road games against NL West opponents have gone UNDER the total runs line.
• There has been no run scored during the first inning in each of the Athletics’ last five road games against National League opponents.
• There has been no run scored during the first inning in four of the last five games between the Athletics and Diamondbacks at Chase Field.

Arizona Diamondbacks Player Prop Facts

• Ketel Marte has hit a home run in each of the Diamondbacks’ last three games against AL opponents.
• Corbin Carroll has recorded at least one hit in each of his last nine appearances against AL West opponents that held a losing record.
• Corbin Carroll is one of only five players to record 10+ Home Runs and 4+ Triples this season.

Athletics Player Prop Facts

• Tyler Soderstrom has hit a home run in three of the Athletics’ last four night games.
• Jack Perkins has recorded five or more strikeouts in four of his last five appearances.
• Tyler Soderstrom has recorded at least one hit in each of the Athletics’ last 10 games as road underdogs against NL opponents.
• Shea Langeliers ranks T10th in the league in Home Runs (22) this season.

Matchup/League Facts

• The Diamondbacks rank 30th in the league for strikeouts this season (681).
• The Diamondbacks rank 30th in the league for strikeouts this season (681).
• The Athletics rank 30th in the league for home runs allowed this season (157).
• The Athletics rank 30th in the league for home runs allowed this season (157).

Athletics vs Diamondbacks Prediction

The Diamondbacks are 4-2 in their last 6 meetings against the A’s and have won two of their last three meetings in Arizona.  

In this Athletics vs Diamondbacks Prediction, the Diamondbacks are coming as -135 home favorites. I like the Dbacks in a bounce back spot today no matter who will be on the mound, as the A’s have been one of the worst teams in baseball lately, with their bullpen ranking dead last in the league. Jack Perkins has been terrible with a 9.26 ERA across his last three starts and the A’s have lost seven of the eight games he has taken the bump. Take the Dbacks to win this one at home.

Nikos Lagouretos's Pick: Arizona Diamondbacks ML