Red Sox vs. Mariners Prediction, Betting Tips & Picks 5/21/2022

J.D. Martinez, batting .349 this season, leads the Boston Red Sox (17-22) into a matchup with Ty France (.327 AVG) and the Seattle Mariners (17-23). The Red Sox are -156 favorites on the moneyline for the matchup at Fenway Park, beginning at 4:10 PM ET. Boston’s Garrett Whitlock gets the start, and he’ll go against Seattle’s Chris Flexen.

Red Sox vs. Mariners Spread and Betting Line

Computer Predictions for Red Sox vs. Mariners

Our computer pick: Seattle Mariners (+134) and Under (9)

Red Sox vs. Mariners Game Info

• Boston Red Sox probable starting pitcher: Garrett Whitlock
• Seattle Mariners probable starting pitcher: Chris Flexen
• Game Day: Saturday, May 21, 2022
• Game Time: 4:10 PM ET
• Location: Boston, Massachusetts
• Stadium: Fenway Park

Boston Red Sox vs Seattle Mariners Pitching Matchup

Red Sox Starter Garrett Whitlock

• Whitlock (1-1) gets the starting nod for the Red Sox in his sixth start of the season. He’s put together a 2.43 ERA in 29 2/3 innings pitched, with 37 strikeouts.
• In his most recent outing on Monday against the Houston Astros, the right-hander went five innings, allowing two earned runs while surrendering three hits.
• In nine games this season, the 25-year-old has amassed an ERA of 2.43, with 11.2 strikeouts per nine innings. Opponents are batting .168 against him.
• So far this season, Whitlock does not have a quality start.
• Whitlock enters this game with two outings of five or more innings pitched this season.
• He will face a Mariners offense that ranks 12th in MLB with 307 total hits (on a .231 batting average). The squad also slugs a collective .374 (18th in MLB) with 41 total home runs (ninth in MLB).

Mariners Starter Chris Flexen

• The Mariners’ Flexen (1-6) will make his eighth start of the season.
• The right-hander’s last appearance was on Monday, when he threw 5 1/3 innings against the Toronto Blue Jays, giving up three earned runs while allowing six hits.
• The 27-year-old has an ERA of 4.35 and 6.6 strikeouts per nine innings with an opponent batting average of .260 in seven games this season.
• He has earned a quality start three times in seven starts this season.
• Flexen will look to pitch five or more innings for the seventh start in a row.
• The Red Sox are batting .242 this season, 12th in MLB. They have a team slugging percentage of .379 (16th in the league) with 30 home runs.

Red Sox Betting Picks & Insights

• This season, the Red Sox have won nine out of the 18 games, or 50%, in which they’ve been favored.
• Boston has been at least a -156 moneyline favorite three times this season, but was upset in all of those games.
• The moneyline for this contest implies a 60.9% chance of a victory for the Red Sox.
• Boston’s games have gone over the total in 13 of their 39 chances.
• The Red Sox are 21-18-0 against the spread this season.

Mariners Betting Picks & Insights

• The Mariners have won in 10, or 34.5%, of the 29 contests they have been named as odds-on underdogs in this year.
• This year, Seattle has won two of five games when listed as at least +134 or worse on the moneyline.
• The Mariners have an implied victory probability of 42.7% according to the moneyline set by sportsbooks for this matchup.
• Seattle’s games have gone over the total in 20 of their 40 opportunities.
• The Mariners have posted a record of 20-20-0 against the spread this season.

Red Sox Leaders & Batting Stats

• Rafael Devers has homered seven times this season, the highest mark on the Red Sox, while hitting .327 with 21 RBI.
• Among all MLB hitters, Devers ranks fifth in batting average, 38th in on-base percentage, and 12th in slugging.
• Xander Bogaerts is hitting .326 with eight doubles, four home runs and 13 walks.
• Bogaerts is 75th in homers and 91st in RBI among all major league hitters this year.
• Martinez leads the Red Sox with a .349 batting average.
• Martinez has at least one base hit in two straight games. During his last five outings he is hitting .524 with three doubles, a home run and four RBI.
• Trevor Story’s 27 runs batted in lead his team.
• Story takes a two-game streak with at least one hit into this one. During his last five outings he is hitting .444 with a double, five home runs, four walks and 12 RBI.

Mariners Leaders & Batting Stats

• France has recorded a team-best batting average of .327 while pacing the Mariners in runs batted in with a mark of 28.
• Among all hitters in MLB, France ranks 41st in home runs and 10th in RBI.
• France has collected a hit in three games in a row. During his last five outings he is hitting .300 with two doubles, a home run, two walks and three RBI.
• Adam Frazier has nine doubles, a triple, a home run and 16 walks while batting .261.
• Frazier is 254th among all batters in the big leagues in home runs, and 123rd in RBI.
• J.P. Crawford is hitting .293 with seven doubles, a triple, four home runs and 15 walks.
• Jesse Winker is hitting .222 with seven doubles, two home runs and 21 walks.

Betting Tips for Red Sox vs. Mariners

We have the Mariners on the moneyline at +134 on the moneyline as our best bet in this contest after analyzing all of the key statistics and trends for this matchup. Our computer picks see the scoring going under the total of 9 runs.