Mariners vs Athletics Prediction 4/20/26 MLB Picks Today

The Athletics and Seattle Mariners meet Monday in MLB action at T-Mobile Park. Here’s a Mariners vs. Athletics Prediction. This article will include a Mariners vs. Athletics Pick.

Athletics Betting Preview

The Athletics are 11-11 on the year and play the Rangers and Royals next. The Athletics are batting. 228 on the season, have a .310 OBP, and have a .362 slugging percentage. The Athletics pitching staff has a 4.82 ERA and a 1.50 WHIP. Shea Langeliers leads the Athletics with 26 hits and 12 RBI while Jacob Wilson and Max Muncy have combined for 43 hits and 16 RBI.

J.T. Ginn gets the ball for the Athletics, and he is 0-0 with a 3.31 ERA and 11 strikeouts this season. This will be Ginn’s second career game against the Seattle Mariners.

Seattle Mariners Betting Preview

The Seattle Mariners are 10-13 on the year and play the Cardinals and Twins next. The Seattle Mariners are batting .216 on the season, have a .320 OBP, and have a .347 slugging percentage. The Seattle Mariners pitching staff has a 3.22 ERA and a 1.16 WHIP. Randy Arozarena leads the Seattle Mariners with 24 hits and 9 RBI while Cole Young and Luke Raley have combined for 40 hits and 24 RBI.

Emerson Hancock gets the ball for the Seattle Mariners, and he is 2-1 with a 2.28 ERA and 25 strikeouts this season. Hancock is 0-0 with a 3.97 ERA and 5 strikeouts in his career against the Athletics.

Why the Seattle Mariners will win

• The home team has won 14 of the Mariners’ last 15 games.
• The Athletics have lost each of their last five games at T-Mobile Park against teams that held a losing record.
• The Athletics have failed to cover the run line in seven of their last eight games against teams that held a losing record.
• The Mariners have covered the run line in each of their last six Monday games.
• The Athletics have trailed after 5 innings in each of their last four games against American League opponents that held a losing record.
• The Mariners have won the first inning in eight of their last nine home games against AL West opponents.
• The Athletics have trailed after 3 innings in seven of their last eight games against opponents that held a losing record.

Why the Athletics will win

• The Athletics have won each of their last five games as road underdogs.
• The Mariners have lost eight of their last nine night games after playing the previous day.
• The road team has covered the run line in 11 of the Athletics’ last 12 games.
• The Mariners have failed to cover the run line in seven of their last eight night games following a win.
• The Athletics have led after 5 innings in each of their last four night games against AL West opponents that held a losing record.
• The Athletics have won the first inning in three of their last four night games against AL West opponents that held a losing record.
• The Athletics have led after 3 innings in each of their last four night games against AL West opponents that held a losing record.

Total Runs Facts

• Eight of the Athletics’ last nine road games after playing the previous day have gone UNDER the total runs line.
• Five of the last six games between the Athletics and Mariners have gone UNDER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Mariners’ last nine home games.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in eight of the Athletics’ last nine road games against AL West opponents.

Seattle Mariners Player Prop Facts

• Cal Raleigh has hit at least one home run in four of his last eight home appearances against the Athletics after playing the previous day.
• Victor Robles has recorded at least one hit in seven of his last eight home appearances against AL West opponents.
• Luke Raley ranks 5th amongst qualified players for Slugging Percentage (.627) this season.

Athletics Player Prop Facts

• Jeff McNeil has recorded at least one hit in nine of his last 10 appearances against the Mariners.
• Brent Rooker has hit a home run in three of the Athletics’ last five games against the Mariners.
• Shea Langeliers ranks T10th in the league in Hits (26) this season.

Matchup/League Facts

• The Mariners rank 1st in the league for walks allowed this season (54).
• The Mariners rank T2nd in the league for ERA this season (3.22).
• The Athletics rank 29th in the league for walks allowed this season (115).
• The Athletics rank T6th in the league for triples this season (3).

Mariners vs Athletics Prediction

Two teams that are relying heavily on the homer and have issues scoring at times when they’re not hitting them. Ginn has a 3.31 ERA and 0.98 WHIP through 16.1 innings. Hancock has a 2.28 ERA and 0.76 WHIP through 23.2 innings. Small sample sizes overall but both pitchers are dealing out of the gate and don’t allow much traffic. Instead of figuring out which team is going to show up, I’ll lean toward the under in this spot. Give me a pitchers’ duel in Seattle on Monday night.