Orioles vs Diamondbacks Prediction 4/13/26 MLB Picks Today
Arizona Diamondbacks (9-7) vs. Baltimore Orioles (8-7)
April 13, 2026 6:35 pm EDT
The Line: Baltimore Orioles -131 / Arizona Diamondbacks 109; Over/Under: 8.5
(Get latest betting odds)
In this article we will formulate an Orioles vs Diamondbacks prediction for this MLB game on Monday, April 13th at Camden Yards in Baltimore, Maryland. Let’s take a look at the prediction for this MLB matchup.
Baltimore Orioles Betting Preview
The Baltimore Orioles are 8-7 this season after they won two out of three against the Giants by scores of 3-6, 6-2, and 6-2. In their game three win, Baltimore had their lead cut to 2-1 in the fifth inning, but they scored the next four runs to pull away with the win. The Orioles recorded 11 hits in the game and they were led by Alonso and Basallo, who both had two RBIs. Povich allowed five hits and one earned run over 6.2 innings for the win, while Wells allowed one earned run in relief. Prior to that series, Baltimore swept the White Sox in three games, but lost all three against the Pirates before that.
This season, Baltimore has a 3.74 ERA with a 1.35 WHIP and a .244 opponent batting average, while they have scored 60 runs with a .249 batting average and a .335 on base percentage. Gunnar Henderson has led the Orioles with six home runs and 12 RBIs, while Taylor Ward has added zero home runs and eight RBIs. The projected starting pitcher for Baltimore is TBD.
Arizona Diamondbacks Betting Preview
The Arizona Diamondbacks are 9-7 this year after they won two out of three against the Phillies by scores of 5-4, 3-4, and 4-3. In their game three win, Arizona blew a 2-0 lead in the sixth inning, but they scored two runs in the eighth to escape with the victory. The Diamondbacks recorded nine hits in the game and they were led by McCann, Del Castillo, Arenado, and Fernandez, who all had one RBI. Gallen allowed eight hits and three earned runs over 5.0 innings, while Clarke picked up the win and Sewald got the save. Prior to that series, Arizona won two out of three against the Mets and split four games with the Braves.
This season, Arizona has a 3.63 ERA with a 1.21 WHIP and a .231 opponent batting average, while they have scored 64 runs with a .226 batting average and a .286 on base percentage. Corbin Carroll has led the Diamondbacks with two home runs and 11 RBIs, while Ketel Marte has added two home runs and seven RBIs. The projected starting pitcher for Arizona is Ryne Nelson, who is 1-1 with a 4.20 ERA and a 1.07 WHIP over 15.0 innings pitched this year.
Why the Baltimore Orioles will win
- The Orioles have won each of their last five games after playing the previous day.
- The Diamondbacks have lost each of their last four night games against the Orioles following a win.
- The Orioles have covered the run line in each of their last four games after playing the previous day.
- The Diamondbacks have failed to cover the run line in each of their last three night games against the Orioles following a win.
- The Diamondbacks have lost the first inning in three of their last four road games against AL East opponents.
- The Orioles have led after 3 innings in five of their last six games as favorites against NL West opponents.
- The Diamondbacks have trailed after 5 innings in five of their last six road games against American League opponents that held a winning record.
Why the Arizona Diamondbacks will win
- The Diamondbacks have won eight of their last nine games as underdogs against American League opponents.
- The Orioles have lost each of their last six night games following a win.
- The Diamondbacks have covered the run line in each of their last 12 games as underdogs against American League opponents.
- The Orioles have failed to cover the run line in each of their last six night games following a win.
- The Diamondbacks have led after 5 innings in 10 of their last 11 games against AL East opponents.
- The Diamondbacks have led after 3 innings in each of their last five games against American League opponents that held a winning record.
Total Runs Facts
- Seven of the Diamondbacks’ last eight games against AL East opponents have gone OVER the total runs line.
- Eight of the Orioles’ last 10 home games against National League opponents have gone UNDER the total runs line.
- The ‘Inning 1 UNDER 0.5 runs’ market has hit in seven of the Orioles’ last eight games as favorites.
- The ‘Inning 1 UNDER 0.5 runs’ market has hit in each of the Diamondbacks’ last four games at Oriole Park at Camden Yards.
Baltimore Orioles Player Prop Facts
- Tyler O’Neill has hit a home run in each of his last four home appearances against NL West opponents.
- Trevor Rogers has recorded five or more strikeouts in each of his last eight appearances against NL opponents.
- Trevor Rogers has recorded a win in each of his last four appearances with the Orioles as home favorites.
- Adley Rutschman has recorded at least one hit in each of his last nine appearances against NL opponents.
Arizona Diamondbacks Player Prop Facts
- Geraldo Perdomo has hit a home run in three of the Diamondbacks’ last four road games against AL opponents that held a winning record.
- Ryne Nelson has recorded six or more strikeouts in three of his last four appearances against AL opponents that held a winning record.
- Ildemaro Vargas has recorded at least one hit in each of his last 16 appearances in night games.
Matchup/League Facts
- The Orioles rank T4th in the league for doubles this season (31).
- The Orioles rank T5th in the league for home runs allowed this season (11).
- The Diamondbacks rank 29th in the league for home runs this season (9).
- The Diamondbacks rank 2nd in the league for triples this season (5).
Orioles vs Diamondbacks Prediction
Baltimore comes into this matchup after winning five of their last six games and they have scored 5+ runs in three of their last four. The Orioles are 5-4 at home this year, while the Diamondbacks are 4-5 on the road. Arizona has won four of their last five games and they have scored 5+ in three of those five. Baltimore hasn’t named a starter for this game, but Arizona is going with Nelson, who has allowed three earned runs and eight hits over his last 10.1 innings. Both teams are scoring plenty of runs right now and we know Nelson is inconsistent, so I like the over here.