The first half of the 2026 MLB season is in the rearview, and that usually means the same thing across the league: deadline decisions, playoff math, and a whole lot of front offices asking whether help is coming from outside or from the farm.
For a few clubs, the answer could be internal. A handful of top prospects are positioned to become second-half call-up candidates, and some of them could wind up playing real roles down the stretch.
Seattle is one of the most obvious places to start. Two of the best pitching prospects in minor league baseball, left-hander Kade Anderson and right-hander Ryan Sloan, are both in Double-A and sitting near the top of MLB Pipeline’s 2026 rankings at No. 5 and No. 8, respectively.
The Seattle Times’ Adam Jude previously reported that the pair could “figure into the M's mix in some capacity by late summer.” What the Mariners do at the trade deadline could shape how quickly that happens, but both arms are in the conversation if Seattle wants another deep October run like the one it made last year.
The Yankees have their own pair of prospects worth tracking, though both are dealing with injuries right now. Shortstop George Lombard Jr. recently began a rehab assignment after spraining a few fingers on his glove hand last month.
Right-hander Carlos Lagrange, meanwhile, is working back from a right shoulder capsular sprain. Earlier this month, New York said Lagrange would be shut down from throwing for at least six weeks, which makes a late-season call-up a tougher path.
Even so, both remain names to watch if they get healthy in time for the second half.
St. Louis could also have a young bat ready to make noise.
Outfielder Joshua Báez, the Cardinals’ No. 3 prospect, has been hammering Triple-A pitching, with 28 homers in 82 games this season. Last year, he put together a big all-around line in the minors, hitting 20 home runs and stealing 54 bases in 117 games.
With the Cardinals one game back of the final National League Wild Card spot, Báez looks like the kind of impact hitter who could matter quickly.
Miami fits the same mold in a different way. The Marlins are 52-45 and would hold the last Wild Card spot if the season ended today.
Given how the organization has tended to operate, a move from within feels more likely than a major deadline splash. That matters because two of their top pitching prospects, Robby Snelling and Thomas White, are injured.
If Miami needs another arm, right-hander Karson Milbrandt could be the name that rises.
Milbrandt is Miami’s No. 4 prospect for 2026 on MLB Pipeline. He reached Triple-A in June and opened with a 2.33 ERA over his first four starts.
July has been a different story so far, with the 22-year-old giving up nine runs in 3 2/3 innings across his two outings. Still, if he gets back on track, he could become a second-half option for a Marlins staff with playoff aspirations.
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