{"id":706297,"date":"2026-05-31T18:43:38","date_gmt":"2026-05-31T18:43:38","guid":{"rendered":"https:\/\/www.newsbeep.com\/ca\/706297\/"},"modified":"2026-05-31T18:43:38","modified_gmt":"2026-05-31T18:43:38","slug":"diamondbacks-vs-mariners-prediction-picks-odds-for-todays-mlb-game","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ca\/706297\/","title":{"rendered":"Diamondbacks vs Mariners Prediction, Picks & Odds for Today’s MLB Game"},"content":{"rendered":"

Want to get more Covers content? Add us as a preferred source on your Google account here<\/a>.<\/p>\n

The Seattle Mariners<\/a> hope to extend a five-game winning streak by picking up a sweep over the Arizona Diamondbacks<\/a> this afternoon.<\/p>\n

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Bryce Miller<\/a> has been impressive since returning from injury, and my Diamondbacks vs. Mariners predictions explain his slider will neutralize the visitors while Merrill Kelly<\/a> has a rough day. <\/p>\n

Here are my MLB picks<\/a> for May 31.<\/p>\n

Who will win Diamondbacks vs Mariners today: Mariners -1.5 (+155)<\/p>\n

After a brutal start to the season, Merrill Kelly\u2019s<\/a> posted four consecutive quality starts with a .237 wOBA \u2014 but I\u2019m not convinced.<\/p>\n

I\u2019m not buying it when a career ground-ball pitcher allowed fly balls (49.4%) and hard hits (41.4%) at the rate he did in those starts \u2014 especially not\u00a0while posting a 0.60 GB\/FB ratio.<\/p>\n

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The Seattle Mariners<\/a> rank sixth in HR\/FB rate (14.6%) over the past two weeks with a 0.88 GB\/FB ratio.<\/p>\n

Kelly ranks in the bottom percentile in both barrel rate and xERA. I\u2019m backing the Mariners to punish him and cover up to +130.<\/p>\n

\"Covers\"<\/p>\n

Covers<\/p>\n

COVERS INTEL:<\/p>\n

Kelly\u2019s fastball (7.9%) and cutter (11.1%) putaway rates have plummeted from last season<\/a>, while Seattle\u2019s 45.3% FB% against those pitches is the league\u2019s seventh-highest this month.<\/p>\n

Diamondbacks vs Mariners Over\/Under pick: Under 7.5 (-114)<\/p>\n

While I\u2019m expecting the Mariners to win easily, I am taking the Under to -120.<\/p>\n

Bryce Miller<\/a> has added 2 to 3 mph onto all of his pitches and has tripled his slider usage from a season ago. That breaking ball is generating a 43.3% whiff rate thanks to an additional 2.6 inches of induced vertical break.<\/p>\n

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That is a devastating equalizer against the Arizona Diamondbacks<\/a>, who have a league-leading 48.2% pull rate over the last two weeks.<\/p>\n

Seattle\u2019s pen has been outstanding this month, ranking fourth in xFIP (3.56), sixth in K% (24.4%), and sixth in wOBA (.290).<\/p>\n

Jason Ence’s 2026 Transparency Record<\/p>\n

ML\/RL bets: 9-12, -3.94 units<\/p>\n

Over\/Under bets: 13-8, +4.28 units<\/p>\n

Diamondbacks vs Mariners odds<\/p>\n

Moneyline: Diamondbacks +133 | Mariners -138<\/p>\n

Run line: Diamondbacks +1.5 (-156) | Mariners -1.5 (+150)<\/p>\n

Over\/Under: Over 7.5 (+100) | Under 7.5 (-104)<\/p>\n

Diamondbacks vs Mariners trend<\/p>\n

The Seattle Mariners have covered the run line in four of their last five games (+4.80 Units \/ 96% ROI).\u00a0Find more\u00a0MLB betting trends<\/a> for Diamondbacks vs. Mariners.<\/p>\n

How to watch Diamondbacks vs Mariners and game info<\/p>\n

Location<\/p>\n

T-Mobile Park, Seattle<\/a>, WA<\/p>\n

Date<\/p>\n

Sunday, May 31, 2026<\/p>\n

First pitch<\/p>\n

4:10 p.m. ET<\/p>\n

TV<\/p>\n

DBacks.TV, Mariners.TV<\/p>\n

Diamondbacks starting pitcher<\/p>\n

Merrill Kelly
(5-3, 5.25 ERA)<\/p>\n

Mariners starting pitcher<\/p>\n

Bryce Miller
(1-0, 2.25 ERA)<\/p>\n

Diamondbacks vs Mariners latest injuriesDiamondbacks vs Mariners weather<\/p>\n

Odds are correct at the time of publishing and are subject to change.
Not intended for use in MA.
Affiliate Disclosure: Our team of experts has thoroughly researched and handpicked each product that appears on our website. We may receive compensation if you sign up through our links.<\/p>\n

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This article originally appeared on Covers.com<\/a>, read the full article here<\/a> and view our best betting sites<\/a> or check out our top sportsbook promos<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"Want to get more Covers content? Add us as a preferred source on your Google account here. The…\n","protected":false},"author":2,"featured_media":706298,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[435],"tags":[485,93163,49,48,10621,462,7675,470,82],"class_list":["post-706297","post","type-post","status-publish","format-standard","has-post-thumbnail","category-mlb","tag-arizona-diamondbacks","tag-bryce-miller","tag-ca","tag-canada","tag-merrill-kelly","tag-mlb","tag-seattle","tag-seattle-mariners","tag-sports"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts\/706297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/comments?post=706297"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts\/706297\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/media\/706298"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/media?parent=706297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/categories?post=706297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/tags?post=706297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}