Sacramento Athletics vs Seattle Mariners Prediction, 4/21/2026 MLB Picks, Best Bets & Odds

Game: Sacramento Athletics vs Seattle Mariners

Date: Tuesday, April 21, 2026

Location: T-Mobile Park in Seattle, WA

TV: MLB.TV

Odds/Point Spread: Sacramento (-182) Seattle (+150)

The Seattle Mariners (10-13) are welcoming the Sacramento Athletics (11-11) at T-Mobile Park on Tuesday. The moneyline on this game has Sacramento at -182 while Seattle is coming in at +150. The over/under comes in at 8.5. The men taking the mound will be Jacob Lopez and Luis Castillo.

The Athletics have accrued 33 doubles as a unit and have knocked 20 baseballs out of the park. Sacramento has a slugging rate of .362 and have struck out 209 times, while taking a walk on 85 occasions. As a team, the Sacramento Athletics are notching 4.1 runs per game, which has them at 19th in baseball. They have earned 89 RBI's in addition to 168 base knocks on the year, while their batting average is .228. They have racked up 91 runs while having a team on-base percentage of .310.

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Their strikeout to walk ratio is 1.58 and the pitching staff has recorded a WHIP of 1.50. Athletics pitchers have given up 28 long balls and also 110 total runs (25th in baseball). Sacramento has given up 182 hits (8.3 per 9 innings) and 106 earned runs. The Athletics have compiled a team earned run average of 4.82 on the season (25th in baseball), and they have struck out 182 batters. Their pitching staff has walked 115 batters and their FIP sits at 5.01 as a unit on the year.

The Athletics relievers have a save percentage of 46.2% and have stepped onto the mound in 31 save situations. They have compiled 6 saves for the year and have blown 7 of 13 chances to save the game. The relief pitchers have inherited 41 runners for the season with 34.1% of those players crossing home plate. Athletics bullpen pitchers have come into the game with runners on base 27 times as well as having 31 appearances in high leverage situations. The Athletics have dispatched 77 relievers to the hill on the year. The bullpen have 17 holds for the year (8th in MLB).

The New York Yankees have accumulated 594 putouts over the course of the season, as well as 176 assists and 5 errors. Their fielding rate is currently at .994 which ranks 1st in MLB, and have a total of 19 double plays. The Athletics have converted 71.2% of baseballs in play into outs out of their 1,782 innings on the diamond, ranking them 9th in MLB.

Lopez has taken the ball for 133 innings and is sitting with 145 K's so far in his career. Lopez (9-8 career record) holds a FIP of 4.46 and he has gone up against 589 opposing batters in the major leagues. His ERA is 4.53 (67 earned runs allowed) and he has a WHIP of 1.366. He has conceded 119 hits (8.0 hits per nine innings) and has had 63 free passes.

The Seattle Mariners have recorded an on-base percentage of .320 and a team batting average of .216 for the season. They have struck out on 214 instances (3rd in the league) and have 161 hits. Seattle has hit 21 long balls over the course of the season to go along with 87 RBIs. The Mariners have a team SLG% of .347 and they have an average of 3.91 runs per game (23rd in baseball). They have put up 29 two-baggers, while walking 100 times and putting up 90 runs.

The Mariners have a team WHIP of 1.166 and are the owners of a FIP of 3.07 as a unit on the campaign. They rank 24th in the league as a staff in total hits surrendered with 184. The Seattle pitching staff have conceded 84 runs for the season while having an ERA of 3.22 (73 earned runs conceded). Their strikeout to walk ratio sits at 8.60 (196 strikeouts against 54 free passes). They have relinquished 14 homers and they surrender 3.70 runs per 9 innings (5th in baseball).

They rank 18th in the league with a save percentage of 62.5%, and they have sent 68 bullpen pitchers to the hill on the campaign. Their relief pitchers have come in 20 times in high leverage situations and also on 22 occasions with base runners. With 18 save situations, the Mariners have earned 10 holds and 3 blown saves. Seattle has called on bullpen pitchers to step onto the mound in 8 save chances and they have tallied 5 saves. Seattle bullpen pitchers hold an inherited score rate of 17.2% out of their 29 inherited runners.

The Seattle Mariners have gotten 29 double plays and have a fielding rate of .989 (8th in professional baseball). The Mariners have accrued 192 assists, 9 errors and have earned a total of 613 putouts during this campaign. In their 1,839 innings on the field, the Mariners have earned a defensive efficiency of 68.5% (24th in the majors).

Thus far in his career, Castillo has allowed 1,234 hits while earning 1,510 K's in 1,428 innings pitched. Castillo (84-85 career record) is the owner of a 3.58 ERA and has allowed 7.8 hits per 9 innings. He has conceded a total of 568 ER's while earning a WHIP of 1.186 and having a FIP of 3.5. His K/BB ratio is 3.28 and he has faced 5,912 opposing hitters during his career.

Who will win tonight's MLB game against the spread or moneyline?

Tony Sink's Pick: Take Sacramento (-182)

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