Fantasy baseball managers know the drill: when one prospect goes down, it's time to look for the next big arm. That's exactly where we are after Robby Snelling's promising MLB debut was cut short by a UCL sprain in his left elbow. While that news stings for those who invested early, the waiver wire is buzzing with minor league pitchers who could be difference-makers down the stretch.

Let's start with Braxton Garrett, who just got the call from Triple-A to join the Miami Marlins. If you've been following the high-stakes market, you know Garrett's supporters were disappointed when Snelling beat him to the majors. But patience paid off. The Marlins clearly had a plan, holding Garrett back since May 5th, and now he's set to face the Minnesota Twins.

Garrett's 2026 season opened with dominance: a 0.77 ERA, 0.514 WHIP, and 23 strikeouts over 23.1 innings in Triple-A. But his last two starts have been a bumpy ride—six runs, six hits, three home runs, and seven walks over eight innings. That's not ideal, but context matters. Garrett is a soft-tosser (92 mph fastball), yet his velocity on both the fastball and sinker has ticked up this season. And don't forget his track record: in 2022-2023, he went 12-14 with a 3.63 ERA, 1.183 WHIP, and 246 strikeouts over 247.2 innings for Miami. He underwent his second Tommy John surgery in December 2024 (this time with an internal brace), which makes his 15-month recovery and return even more impressive.

Then there's Thomas White, another high-ceiling arm in the Marlins system. After battling an oblique injury in spring training, White made his Double-A debut on April 2nd. Command was an issue early—six walks over six innings—but he still posted a 3.00 ERA with 10 strikeouts. Miami saw enough to promote him to Triple-A in mid-April, where he's been electric: a 3.07 ERA, just 11 hits and one home run allowed over 14.2 innings, with 22 strikeouts. The catch? He hasn't recorded an out past the fifth inning, averaging only 4.1 innings per start. That limits his immediate fantasy value, but the strikeout upside is undeniable.

For managers looking to stash arms with MLB promotions on the horizon, these two are worth a long look. Garrett brings MLB experience and a proven track record, while White offers the kind of swing-and-miss stuff that can win leagues. Keep your head down, keep searching—the next man up is already here.