Cubs vs Mariners Prediction 6/20/25 MLB Picks Today

In this article, we will formulate a Cubs vs Mariners prediction for this MLB game on Friday, June 20th at Wrigley Field in Chicago, Illinois. Let’s take a look at the prediction for this MLB matchup. 

Chicago Cubs Betting Preview

The Chicago Cubs are 45-29 this season after they split two games with Milwaukee by scores of 5-3 and 7-8. In their game two loss, Chicago led 2-1 in the first inning, but they allowed seven of the next eight runs in the game and fell short in their comeback attempt. The Cubs recorded six hits in the game, and they were led by Happ and Crow-Armstrong, who both had two RBIs in the loss. Chicago started Taillon, who allowed eight hits and five earned runs over 4.0 innings for the loss, while Cabrera allowed three earned runs in one relief inning. 

Prior to that series, the Cubs won three out of four against the Pirates, but did lose two out of three against the Phillies before that. Chicago has won three of their last four games, and they are currently first in the NL Central standings. The Chicago pitching staff has a 3.62 ERA with a 1.23 WHIP and a .244 opponent batting average, while their offense has scored 397 runs with a .254 batting average and a .324 on-base percentage this season. Pete Crow-Armstrong has led Chicago with 20 home runs and 60 RBIs, while Seiya Suzuki has added 18 home runs and 61 RBIs this year. The projected starting pitcher for Chicago is Matthew Boyd, who is 6-3 with a 2.79 ERA and a 1.17 WHIP over 80.2 innings pitched this season. 

Seattle Mariners Betting Preview

The Seattle Mariners are 37-36 this year after they lost two out of three against Boston by scores of 0-2, 8-0, and 1-3. In their game three loss, Seattle tied the game at one in the second inning, but they went scoreless over the last seven innings for the loss. The Mariners recorded six hits in the game, and they were led by Arozarena, who had one hit and one walk in the loss. Seattle started Castillo, who allowed three hits and three earned runs over 6.0 innings for the loss, while Vargas, Speier, and Bazardo combined for three scoreless innings in relief. 

Prior to that series, the Mariners swept the Guardians in three games, but lost all three against the Diamondbacks before that. Seattle has won four of their last six games, and they are currently second in the AL West standings. The Seattle pitching staff has a 3.87 ERA with a 1.28 WHIP and a .249 opponent batting average, while the offense has scored 317 runs with a .242 batting average and a .322 on-base percentage this season. Cal Raleigh has led Seattle with 27 home runs and 60 RBIs, while Jorge Polanco has added 11 home runs and 36 RBIs this year. The projected starting pitcher for Seattle is George Kirby, who is 1-3 with a 5.96 ERA and a 1.36 WHIP over 25.2 innings pitched this year. 

Why the Cubs will beat the Mariners

• The Cubs have won each of their last 10 games as favorites following a loss.
• The Mariners have lost seven of their last eight road games.
• The Mariners have failed to cover the run line in each of their last eight road games.
• The Cubs have covered the run line in each of their last nine Friday games as favorites against AL West opponents.
• The Cubs have led after 5 innings in six of their last seven games against AL West opponents.
• The Cubs have led after 3 innings in each of their last four games as favorites against American League opponents.

Why the Mariners will beat the Cubs

• The Mariners have won each of their last three games as underdogs against National League opponents following a home loss.
• The Cubs have lost five of their last six day games against teams that held a winning record.
• The Mariners have covered the run line in 10 of their last 11 games as underdogs following a home loss.
• The Cubs have failed to cover the run line in each of their last five games after playing the previous day.
• The Mariners have won the first inning in three of their last four games against NL Central opponents.
• The Mariners have led after 5 innings in each of their last four day games against National League opponents.
• The Cubs have trailed after 3 innings in each of their last four home games against opponents that held a winning record.

Total Runs Facts

• Each of the Cubs’ last seven games against AL West opponents have gone OVER the total runs line.
• Each of the Mariners’ last four day games against NL Central opponents have gone OVER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Mariners’ last 11 day games against National League opponents.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Cubs’ last six day games against American League opponents.

Chicago Cubs Player Prop Facts

• Ian Happ has hit at least one home run in three of the Cubs’ last five games against opponents that held a winning record.
• Seiya Suzuki has scored at least one run in each of the Cubs’ last six games against AL West opponents.
• Seiya Suzuki has recorded at least one RBI in each of the Cubs’ last seven games against AL West opponents.
• Seiya Suzuki has recorded at least one hit in each of the Cubs’ last nine games against AL West opponents.

Seattle Mariners Player Prop Facts

• Cal Raleigh has hit at least one home run in four of the Mariners’ last five games against NL opponents that held a winning record.
• Victor Robles has scored at least one run in each of his last five appearances in day games against teams that held a winning record.
• George Kirby has recorded six or more strikeouts in three of his last four appearances with the Mariners as underdogs against NL opponents.
• George Kirby has recorded a win in six of his last seven road appearances.
• Cal Raleigh has recorded at least one RBI in each of the Mariners’ last five games against NL opponents that held a winning record.
• Julio Rodriguez has recorded at least one hit in each of the Mariners’ last 12 games as road underdogs.

Cubs vs Mariners Prediction 

Chicago comes into this matchup after winning three of their last four games, but we have seen some inconsistent offense from them over the last week. The Cubs are 24-13 at home this year, while the Mariners are 17-17 on the road. Seattle is another team that has been inconsistent at the plate, and they will face Boyd, who has allowed two earned runs or fewer in four straight outings. Seattle is starting Kirby, who has allowed two earned runs in three straight starts. I like the pitching matchup in this game, and I am taking the under here.