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Speedy outfield prospect view as SF Giants biggest surprise in 2026

He remains on a tear
ByJeff Young|
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Apr 15, 2026; Cincinnati, Ohio, USA; View of Giants game hats on the dugout steps, with a patch honoring Jackie Robinson during the game between the San Francisco Giants and the Cincinnati Reds at Great American Ball Park. Players and coaches will wear No. 42 in honor of Jackie Robinson Day around the league. Mandatory Credit: Aaron Doster-Imagn Images
Apr 15, 2026; Cincinnati, Ohio, USA; View of Giants game hats on the dugout steps, with a patch honoring Jackie Robinson during the game between the San Francisco Giants and the Cincinnati Reds at Great American Ball Park. Players and coaches will wear No. 42 in honor of Jackie Robinson Day around the league. Mandatory Credit: Aaron Doster-Imagn Images | Aaron Doster-Imagn Images

Speedy outfield prospect Jonah Cox has been one of the best hitters in the minors so far. That has caught the attention of many external evaluators, with Jim Callis of MLB Pipeline ranking him as the biggest SF Giants surprise in their farm system for 2026.

Cox's season so far has not only been a surprise to scouts and talent evaluators, but to the Giants as well. When the Giants handed out their camp invites in the spring, they only extended an invite to three outfielders, including Bo Davidson.

This did not include Cox or Scott Bandura. Those camp invites are usually a sign that a player is on the radar. Similar to Cox, Bandura has been a pleasant surprise this season, and the Giants recently rewarded him with a promotion to Triple-A. Experience likely played a factor in this decision, as Bandura has been at Double-A for nearly a full season.

Cox is a bit greener with experience in the Eastern League, but he may not be far behind. He is sitting at 146 plate appearances with the Richmond Flying Squirrels, so the Giants likely want to see him continue to excel at that level. They may also be waiting for a roster spot to open up in Triple-A, so that there is a clear path to playing time.

MLB writer breaks down what has led to SF Giants prospect's surprise season

Jim Callis highlights what has led to Cox's breakout season in 2026:

"He showed off well above-average speed but middling offensive production in his first three years as a pro. Now he's hitting balls harder and in the air more often..."
Jim Callis

It is hard to pinpoint what has led to Cox hitting the ball harder, but getting the ball in the air has been observable. He has a 38.0 percent fly ball rate in 2026, and fly balls tend to go for extra-base hits at a higher rate than other batted-ball outcomes.

Regardless of what has led to the changes, they have paid off nicely. Cox is slashing .403/.448/.690 (191 wRC+) with six home runs, 33 RBI, and 28 runs in 146 plate appearances this season. His .403 batting average leads all minor leaguers with at least 100 plate appearances, and his 191 wRC+ is second in the minors using that same threshold.

Plus, the 24-year-old is an elite runner and is able to translate that to being a volume base stealer. He has 21 steals in 26 chances this year. Throughout his pro career, he has 157 steals in 184 opportunities. That is an excellent 85.3 percent success rate.

Before this season, Cox profiled as a pinch runner and defensive specialist. However, the notable improvement in his offense gives him a more robust profile.

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