{"id":947,"date":"2026-06-01T12:40:27","date_gmt":"2026-06-01T12:40:27","guid":{"rendered":"https:\/\/nextcitydigest.com\/?p=947"},"modified":"2026-06-01T12:40:27","modified_gmt":"2026-06-01T12:40:27","slug":"sf-giants-farm-director-explains-jonah-coxs-ascent-to-big-league-promotion","status":"publish","type":"post","link":"https:\/\/nextcitydigest.com\/?p=947","title":{"rendered":"SF Giants’ farm director explains Jonah Cox’s ascent to big-league promotion"},"content":{"rendered":"
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MILWAUKEE \u2014 The Giants didn\u2019t invite Jonah Cox to major league spring training like they did Bo Davidson or Parks Harber. He hadn\u2019t played higher than High-A when the season started. He has never been considered one of the organization\u2019s top prospects.<\/p>\n

Read more Bay Area events calendar for June 5-11 weekly editions<\/a><\/p>\n

But after two months as the best hitter in all of the minors, Cox found himself leapfrogging Triple-A entirely and making his major league debut on Sunday at Coors Field.<\/p>\n

\u201cI think if you put him in center field right now in the major leagues, he\u2019d win a Gold Glove if he played every day,\u201d senior director of player development Kyle Haines said before Cox\u2019s promotion. \u201cThis guy\u2019s a Gold Glove center fielder. He\u2019s one of the best baserunners in minor league baseball, if not the best. He\u2019s hitting .420 and he doesn\u2019t strike out. He hits righties, and he hits lefties.<\/p>\n

\u201cIf somebody who was picked in the first round was doing exactly what he was doing, he\u2019d be in the argument for top-10 prospect in the whole game of baseball.\u201d<\/p>\n

Cox is the son of former major leaguer Darron Cox, who played 15 games with the 1999 Montreal Expos under Giants legend Felipe Alou. The outfielder was a sixth-round selection by the Oakland A\u2019s in the 2023 MLB draft, then was sent to San Francisco in the Ross Stripling trade.<\/p>\n

The 24-year-old spent three collegiate seasons at different schools, bouncing from one JUCO (Butler Community College) to another JUCO (Eastern Oklahoma State College) before landing at Oral Roberts. In 2023, Cox carried the Golden Eagles to their first College World Series appearance since 1978, hitting .412\/.470\/.646 with 11 homers and 68 RBIs over 66 games.<\/p>\n

The center fielder\u2019s calling cards have long been his speed and defense. He stole 163 bases in the minors on 192 attempts (84.8% success rate), and his 27 steals with Richmond were tied for seventh in the Eastern League.<\/p>\n

Cox hadn\u2019t been exceptional at the plate in his first three seasons in the minors. He hit .257 with 10 homers and a .731 OPS last season with High-A Eugene, only 3 percent better than a league-average hitter by weighted runs created plus (wRC+). But in Richmond, he emerged as much more than a speedy defense-first outfielder by tearing up the Eastern League from the jump.<\/p>\n

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At the time of his promotion, Cox was hitting .400 over 44 games with the Flying Squirrels. That number wasn\u2019t just the highest in the Eastern League. It\u2019s not just the highest in Double-A. It\u2019s the highest in all of the minors.<\/p>\n

Read more Endorsement: San Jose needs a blight fighter. Elect Genny Altwer to City Council.<\/a><\/p>\n

\u201cThere\u2019s some visible adjustments with the offense that we\u2019ve made and have worked on for a long time,\u201d Haines said. \u201cI think our hitting department deserves a lot of credit because there\u2019s the long-term development models that we apply, and I think some of them are sticking for him. Jonah deserves a lot of credit, too, for gaining confidence and working hard.\u201d<\/p>\n

Cox wasn\u2019t exactly hitting in the offense-friendly Pacific Coast League either. The Eastern League is notorious for suppressing offense, and the league\u2019s average batting average of .244 is the highest since 2021.<\/p>\n

At the time of his promotion, Cox led the Eastern League in on-base percentage (.453), slugging percentage (.644) and wRC+ (187). There\u2019s no publicly available calculation for WAR in the minors, but when accounting for offense, speed and defense, Cox may have been the most valuable player in the minors this season. <\/p>\n

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\u201cEveryone knows how good he is on the bases because of his speed, and the speed shows up in the outfield,\u201d Giants manager Tony Vitello told reporters in Denver on Sunday. \u201cMaybe at times, labeled a \u2018defender\/runner\u2019 but in my experiences with all young players, the more physical you get \u2014 he looks great \u2014 and the more experience and more at-bats you get, the better you become offensively, and he\u2019s really swung the bat well.\u201d<\/p>\n

For all the production, it\u2019s important to note Cox\u2019s batting average on balls in play. Cox had an absurd .464 BABIP at the time of his promotion, the highest mark in the Eastern League by a healthy margin, an implication that there was a degree of luck involved in Cox\u2019s blistering hot start.<\/p>\n

San Francisco hasn\u2019t made the bold move to promote a prospect straight from Double-A Richmond since Bobby Evans was running the show, when the team promoted infielder Miguel Gomez and pitcher Dan Slania in 2017. Other notable instances include infielder Matt Duffy and reliever Hunter Strickland in 2014, as well as Pablo Sandoval in 2008.<\/p>\n

The lingering question with this bold promotion, which came a day after Harrison Bader hit the injured list, is whether the Giants rushed Cox to the majors, risking his development.<\/p>\n

Cox wasn\u2019t on the fast track to the majors by any means. In 2023, he played 35 games between the Arizona Complex League and Single-A after being drafted. In 2024, Cox played 57 games with Single-A San Jose and High-A Eugene. In 2025, he spent the whole season with High-A Eugene. Now, following 44 games in Double-A with an abnormally high BABIP, Cox is a Giant.<\/p>\n

The likely best course of action for his development is to have him play regularly until Bader is ready to return from the injured list. If Cox\u2019s glove is as good as advertised, the Giants can trot him out in center field while batting him low in the lineup and hope that his defense and speed can provide instant value.<\/p>\n

Read more Harriette Cole: I\u2019ve grown up so much at college, and my friends at home haven\u2019t<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Cox scored a run and recorded his first major league hit in his debut on Sunday against the Rockies<\/p>\n","protected":false},"author":1,"featured_media":946,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-947","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sports"],"yoast_head":"\nSF Giants’ farm director explains Jonah Cox’s ascent to big-league promotion - Next City Digest<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nextcitydigest.com\/?p=947\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SF Giants’ farm director explains Jonah Cox’s ascent to big-league promotion - Next City Digest\" \/>\n<meta property=\"og:description\" content=\"Cox scored a run and recorded his first major league hit in his debut on Sunday against the Rockies\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nextcitydigest.com\/?p=947\" \/>\n<meta property=\"og:site_name\" content=\"Next City Digest\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-01T12:40:27+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/nextcitydigest.com\\\/?p=947#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nextcitydigest.com\\\/?p=947\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/nextcitydigest.com\\\/#\\\/schema\\\/person\\\/13065d40d633843429ac57d4e5c06f9b\"},\"headline\":\"SF Giants’ farm director explains Jonah Cox’s ascent to big-league promotion\",\"datePublished\":\"2026-06-01T12:40:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/nextcitydigest.com\\\/?p=947\"},\"wordCount\":961,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/nextcitydigest.com\\\/?p=947#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/nextcitydigest.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/145734325dc58dc6edceb75d7398dc52.webp\",\"articleSection\":[\"Sports\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/nextcitydigest.com\\\/?p=947#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nextcitydigest.com\\\/?p=947\",\"url\":\"https:\\\/\\\/nextcitydigest.com\\\/?p=947\",\"name\":\"SF Giants’ farm director explains Jonah Cox’s ascent to big-league promotion - 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