In this article, we will formulate a Cubs vs Mariners Prediction for this MLB matchup on Sunday, August 23rd in the third game of this series. Let’s take a look at the prediction for this MLB matchup.
Seattle Mariners Preview
The Seattle Mariners have a 62-68 record this season and sit in 3rd place in the AL West. They have a 35-29 home record and are coming off a 5-4 home win against the Cubs. They will face the Phillies and the Blue Jays next.
The Seattle Mariners have a .230 batting average this season, .309 OBP, and .375 Slugging percentage. Seattle’s pitching staff has a 4.01 ERA and 1.23 WHIP. Randy Arozarena is the Mariners’ best hitter with a .275 batting average, while leading the team in RBI with 57, adding a team-high 19 home runs.
Bryce Miller (R) is the projected starting pitcher for the Mariners, holding a 4-7 record, 3.71 ERA, and 1.04 WHIP.
Chicago Cubs Preview
The Chicago Cubs have a 74-56 record this season and sit in 2nd place in the NL Central. They have a 36-29 road record and are coming off a 4-5 road loss against the Mariners. They will face the Diamondbacks and the Reds next.
The Chicago Cubs have a .248 batting average this season, .337 OBP, and .420 Slugging percentage. Chicago’s pitching staff has a 4.15 ERA and 1.26 WHIP. Pete Crow-Armstrong is the Cubs’ best hitter with a .279 batting average, while leading the team in RBI with 80, adding a team-high 32 home runs.
Shota Imanaga (L) is the projected starting pitcher for the Cubs, holding an 8-9 record, 3.77 ERA, and 1.09 WHIP.
The Chicago Cubs @ Seattle Mariners Betting Trends: August 23, 2026
- Probable Starting Pitcher: Bryce Miller Record this season: 4-7 ERA: 3.71
- Home Record: 1-3
- Last 5 against Cubs: 1-0
Why the Seattle Mariners will win
- The Cubs have lost six of their last seven games as favorites against AL West opponents.
- The Mariners have won three of their last four games as underdogs after playing the previous day.
- The Cubs have failed to cover the run line in each of their last seven games as favorites against AL West opponents.
- The underdogs have covered the run line in 12 of the Mariners’ last 13 games at T-Mobile Park.
- The Mariners have won the first inning in four of their last five day games at T-Mobile Park.
- The Mariners have led after 3 innings in eight of their last nine home games against opponents that held a winning record.
- The Cubs have trailed after 5 innings in nine of their last 10 games against AL West opponents.
- Probable Starting Pitcher: Shota Imanaga Record this season: 8-9 ERA: 3.77
- Road Record: 3-4
- Last 5 against Mariners: 1-0
Why the Chicago Cubs will win
- The Mariners have lost each of their last eight games as underdogs against National League opponents following a win.
- The Cubs have won 12 of their last 13 games as road favorites against AL West opponents.
- The Mariners have failed to cover the run line each of their last seven home games against teams that held a winning record.
- The Cubs have covered the run line in each of their last seven games against American League opponents following a loss.
- The Mariners have lost the first inning in five of their last six games as underdogs against National League opponents.
- The Mariners have trailed after 3 innings in six of their last seven games as underdogs against National League opponents.
- The Mariners have trailed after 5 innings in eight of their last nine games as underdogs against National League opponents.
Total Runs Facts
- Each of the Mariners’ last eight games as underdogs against NL Central opponents have gone OVER the total runs line.
- Each of the Cubs’ last four games against AL West opponents have gone OVER the total runs line.
- There has been at least one run scored in the first inning in each of the Mariners’ last eight games.
- There has been at least one run scored in the first inning in eight of the Cubs’ last nine games against American League opponents.
Seattle Mariners Player Prop Facts
- Cal Raleigh has hit at least one home run in four of the Mariners’ last five games against the Cubs.
- Bryce Miller has recorded a win in five of his last six appearances against NL Central opponents that held a winning record.
- Bryce Miller has recorded five or more strikeouts in each of his last four appearances in day games.
- Brendan Donovan has recorded at least one hit in each of his last 10 appearances with his team as an underdog against NL opponents.
- Josh Naylor ranks T10th in the league in Steals (25) this season.
Chicago Cubs Player Prop Facts
- Alex Bregman has hit at least one home run in four of the Cubs’ last five road games.
- Shota Imanaga has recorded six or more strikeouts in four of his last five appearances in day games.
- Alex Bregman has recorded at least one hit in 19 of his last 20 road appearances against AL West opponents that held a losing record.
- Pete Crow-Armstrong ranks 2nd amongst qualified players for Slugging Percentage (.554) this season.
Matchup/League Facts
- The Mariners rank 30th in the league for runs scored this season (511).
- The Mariners rank 30th in the league for doubles this season (158).
- The Cubs rank 1st in the league for walks this season (549).
- The Cubs rank 2nd in the league for runs scored this season (665).
Cubs vs Mariners Prediction
The Mariners are 4-1 in their last 5 meetings against the Cubs, having won their last two meetings in Seattle.
In this Cubs vs Mariners Prediction, both teams are coming at a pickem price. Both pitchers have excellent numbers this season but have been in very bad form lately. Bryce Miller has given up 14 runs across his last three starts and Imanaga 7 runs in his last two starts, while the Mariners’ bullpen has been atrocious as of late, with a 8.05 ERA in their last 10 games. Both games in this series have been high-scoring ones with 9 and 11 total runs and both teams are 12-3 to the over in their last 15 games combined. Take the over 7.5 in this one.