| MATCHUP | Chicago Cubs | Seattle Mariners |
|---|---|---|
| Team Records | 74-54 | 60-68 |
| Spread | -1.5 161 | +1.5 -197 |
| Moneyline | -108 | -112 |
| Total | Over 8 (-105) | Under 8 (-115) |
| Where | T-Mobile Park, Seattle, Washington | |
| When | Friday, August 21, 2026 | |
| Time | 10:10 PM EDT | |
| TV | MLB.TV | |
Seattle Mariners Preview
The Seattle Mariners have a 60-68 record this season and are sitting in 3rd place in the AL West. They have a 33-29 home record and are coming off a 4-7 road loss against the Brewers. They will face the Phillies and the Blue Jays next.
The Seattle Mariners have a .230 batting average this season, a .310 OBP, and a .377 slugging percentage. The Mariners’ pitching staff has a 3.97 ERA and a 1.22 WHIP. Randy Arozarena leads the Mariners with a .272 batting average. Cole Young leads the team in RBI with 56, while Julio Rodriguez adds a team-high 19 home runs.
Emerson Hancock (R) is the projected starting pitcher for the Mariners, and he has a 7-7 record, a 3.30 ERA, and a 1.11 WHIP.
Chicago Cubs Preview
The Chicago Cubs have a 74-54 record this season and are sitting in 2nd place in the NL Central. They have a 36-27 road record and are coming off a 0-3 home loss against the White Sox. They will face the Diamondbacks and the Reds next.
The Chicago Cubs have a .248 batting average this season, a .337 OBP, and a .418 slugging percentage. The Cubs’ pitching staff has a 4.14 ERA and a 1.26 WHIP. Pete Crow-Armstrong leads the Cubs with a .279 batting average, while leading the team in RBI with 79 and adding a team-high 31 home runs.
Matthew Boyd (L) is the projected starting pitcher for the Cubs, and he has an 8-2 record, a 4.02 ERA, and a 1.24 WHIP.
The Chicago Cubs @ Seattle Mariners Betting Trends: August 21, 2026
- Probable Starting Pitcher: Emerson Hancock Record this season: 7-7 ERA: 3.30
- Home Record: 3-4
- Last 5 against Cubs: 0-2
Why the Seattle Mariners will win
- The Mariners have won each of their last nine home games against National League opponents following a road loss.
- The Cubs have lost seven of their last eight games against AL West opponents.
- The Cubs have failed to cover the run line in each of their last eight games against AL West opponents.
- The Mariners have covered the run line in eight of their last nine home games against National League opponents following a road loss.
- The Mariners have led after 3 innings in six of their last seven home games against opponents that held a winning record.
- The Cubs have lost the first inning in three of their last four games against American League opponents that held a losing record.
- The Cubs have trailed after 5 innings in seven of their last eight games against AL West opponents.
- Probable Starting Pitcher: Matthew Boyd Record this season: 8-2 ERA: 4.02
- Road Record: 3-0
- Last 5 against Mariners: 1-2
Why the Chicago Cubs will win
- The Cubs have won each of their last five games as underdogs following a loss.
- The Mariners have lost each of their last four games as favorites.
- The Cubs have covered the run line in each of their last 14 games as underdogs.
- The Mariners have failed to cover the run line in each of their last nine Friday home games.
- The Mariners have trailed after 3 innings in eight of their last nine games against National League opponents that held a winning record.
- The Mariners have lost the first inning in five of their last six games against National League opponents.
- The Mariners have trailed after 5 innings in nine of their last 10 games against National League opponents that held a winning record.
Total Runs Facts
- Each of the Cubs’ last four road games against AL West opponents have gone UNDER the total runs line.
- Five of the Mariners’ last six games have gone OVER the total runs line.
- There has been at least one run scored in the first inning in each of the Cubs’ last nine night games against American League opponents.
- There has been at least one run scored in the first inning in each of the Mariners’ last six games.
Seattle Mariners Player Prop Facts
- Cal Raleigh has hit at least one home run in each of the Mariners’ last three games against the Cubs.
- Emerson Hancock has recorded five or more strikeouts in each of his last four appearances in night games.
- Josh Naylor has recorded at least one hit in each of his last 13 appearances with his team as a home favorite against NL Central opponents.
- Josh Naylor ranks 10th in the league in Steals (25) this season.
Chicago Cubs Player Prop Facts
- Michael Busch has hit a home run in each of the Cubs’ last three road games against the Mariners.
- Matthew Boyd has recorded a win in each of his last five appearances against AL opponents.
- Matthew Boyd has recorded five or more strikeouts in eight of his last nine appearances in night games against teams that held a losing record.
- Alex Bregman has recorded at least one hit in 17 of his last 18 road appearances against AL West opponents that held a losing record.
- Pete Crow-Armstrong ranks 3rd amongst qualified players for Slugging Percentage (.550) this season.
Matchup/League Facts
- The Mariners rank 30th in the league for runs scored this season (500).
- The Mariners rank 30th in the league for doubles this season (156).
- The Cubs rank 1st in the league for on-base percentage this season (.337).
- The Cubs rank 1st in the league for walks this season (544).
Cubs vs Mariners Prediction
The Diamondbacks are 4-2 in their last 6 meetings against the Reds and are 3-1 in their last 4 meetings in Arizona.
In this Cubs vs Mariners Prediction, both teams are coming at a pickem price. I don’t like the pitching in this matchup, as both starters have been in poor form. Boyd has given up 13 runs in his last three starts and Hancock has given up at least two runs in each of his last five starts. The Mariners’ bullpen has been atrocious lately and both teams are 11-5 to the over in their last 16 games combined. The total is set too low for this game. Take the over 7.5 runs.