Seattle Mariners vs. Oakland Athletics – MLB – Predictions, Betting Lines, Odds and Trends

The Seattle Mariners will meet the Oakland Athletics in the first game of the MLB season on Sunday at T-Mobile Park. The matchup begins at 4:10 PM ET.

The Mariners are heavily favored (-276 on the moneyline to win) when they take the field at home against the Athletics (+225). The Mariners will start Robbie Ray against the Athletics and James Kaprielian. The matchup has an over/under of 7 total runs.

Mariners vs. Athletics Predictions

Mariners vs. Athletics Betting Odds

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Mariners vs. Athletics Hitting Splits 2021


  • The Mariners averaged 1.2 homers per home game last season (94 total at home).
  • The Mariners had a .369 slugging percentage and averaged 2.5 extra-base hits per game at home.
  • The team averaged 6.8 hits per game and batted .215 at home last season.
  • The Mariners’ offense averaged 4.0 runs in home games.
  • The Mariners had a .295 on-base percentage and averaged 3.4 walks per game at home.
  • They averaged 9.3 strikeouts per game at home last season.

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  • In 81 games on the road last season, they hit 112 homers, an average of 1.4 per contest.
  • They had a team slugging percentage of .425 in away games last season with 269 extra-base hits.
  • In away games last season, they had a .247 AVG with 8.6 base hits per contest.
  • They scored 5.0 runs per game last season on the road.
  • When they played on the road last season, they had a team on-base percentage of .319 and drew 3.2 walks per game.
  • In 81 road games last season, they averaged 8.3 strikeouts per contest.

Mariners vs. Athletics Starting Pitcher Betting Trends

Projected starter: Robbie Ray

  • The Mariners have a 15-16-0 ATS record in Ray’s 31 starts that had a set spread.
  • The Mariners have been favored on the moneyline in 18 of Ray’s starts this season, and they went 11-7 in those games.
  • Ray’s team has a 17-14 record in his starts this season.
  • Ray has had 31 starts with a set total this season, and the teams combined hit the over in 15 of those outings.

Projected starter: James Kaprielian

  • Kaprielian’s team is 16-9-0 against the spread in his starts this season.
  • His team is 11-12 this season when he starts and they are the moneyline underdog.
  • Kaprielian’s team has a 12-13 record in his starts this season.
  • Games Kaprielian has started this season hit the over 10 times in 25 chances.

Mariners Batting Leaders

  • Mitch Haniger accumulated 39 home runs and had 100 runs batted in last season.
  • Jesse Winker hit .305 with 32 doubles, a triple, 24 home runs and 53 walks.
  • Adam Frazier racked up 176 hits with a batting average of .305 last season.
  • Ty France hit .291 with 32 doubles, a triple, 18 home runs and 46 walks.

Athletics Batting Leaders

  • Tony Kemp finished last season with eight home runs, 37 RBI and a batting average of .279.
  • Sean Murphy finished with 59 RBI while batting .216 and hitting 17 homers.
  • Seth Brown finished with a .214 batting average last season and 20 home runs.
  • Chad Pinder collected 52 hits, posted an OBP of .300 and a .411 SLG.

Where To Watch Mariners vs. Athletics

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