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Three top fantasy baseball prospects - Joe Boyle, Logan Henderson, Jordan Lawlar - that can make big impacts. These MLB prospects are waiver wire pickups or stashes.
Fantasy managers have seen several prospect pitchers get the call to the major leagues and make an immediate impact. Kansas City's Noah Cameron has been very productive at times, and Milwaukee's Jacob Misiorowski and Cincinnati's Chase Burns are among the most recent budding aces to get the call.
In this piece, we will look at two pitchers to stash and a top infielder in Arizona and determine if fantasy managers should continue holding them on their bench in Week 15 of the fantasy baseball season.
Should those players be left on the waiver wire, or should fantasy managers add them before their breakout? Let's dive in!
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Joe Boyle, SP/RP, Tampa Bay Rays
Current Level: MLB
Availability: 5% rostered
2025 AAA stats: 73 IP, 1.85 ERA, 0.99 WHIP, 96 SO, 31 BB
Moving up to the No. 3 spot is Joe Boyle. After weeks of typically sitting in the fourth spot on this list, his incredible June has pushed him up and has actually just earned him the call to the majors, which means this will be the last time he will appear on this list.
On Sunday morning, the Rays opted to promote Boyle to the big leagues, but not as a starting pitcher, which is why he doesn't sit in the No. 1 spot on this list.
In June, Boyle was one of the best pitchers in the minor leagues, posting a stellar 1.80 ERA with a 0.97 WHIP through 30 innings with Triple-A Durham. During this stretch, Boyle struck out 49 batters and only allowed 11 free passes.
During his first 43 innings of the Triple-A regular season, Boyle was just as dominant, posting a 1.67 ERA, 0.98 WHIP, and a 47:20 K:BB.
While Boyle is no longer viewed as a traditional prospect, his longest stint in the majors was just 47 2/3 innings long, and it did not go very well. Last season, Boyle stumbled during his first extended look in the MLB with the Athletics. The right-hander posted a high 6.42 ERA with a 1.72 WHIP. He showcased excellent strikeout upside, tallying 56, but had very weak command, allowing walks at a 17.7% rate.
Boyle was eventually traded to Tampa Bay in the offseason, in a move that sent Jeffrey Springs to the Athletics.
While Tampa Bay has kept Boyle in the minor leagues for the majority of the season, he was given one spot start and was quite impressive, tossing five no-hit innings against the Braves.
Currently, there is no clear opening for Boyle, which makes his rest-of-season outlook difficult to project. When he returned to the majors on Sunday, he was deployed in a long relief role behind right-hander Drew Rasmussen. While he could log four to five innings in each appearance, he may not be given the most opportunities to pick up a victory and tally many strikeouts.
Given that he is back in the majors, he is worth adding in all 12-team leagues and above. However, shallow league managers should leave him on the waiver wire until he officially rejoins the rotation.
Our very own Joe Boyle won the International League Pitcher of the Month with the Durham Bulls in June!! Congratulations!!@RaysPlayerDev // #GrowlersPipeline pic.twitter.com/MXQdWxuIMa
— Kalamazoo Growlers (@KzooGrowlers) July 3, 2025
-Written by Andy Smith
Logan Henderson, SP, Milwaukee Brewers
Current Level: AAA
Availability: 15% rostered
2025 MLB stats: 21 IP, 1.71 ERA, 0.95 WHIP, 29 SO, 6 BB
While fellow Milwaukee pitching prospect Misiorowski has taken much of the club spotlight regarding pitching, Logan Henderson was very productive during his first look in the big leagues earlier this season. Through 21 innings (four starts), the right-hander allowed just three runs while posting a 20:5 K:BB. He picked up three victories.
The one blemish on his scorecard was that he allowed at least one home run in all but one game.
Despite his struggles to keep the ball on the ground, Henderson flashed immense strikeout upside and average control.
However, Henderson was optioned back to Triple-A following his start on May 25 to likely preserve his innings for the second half of the season. Even though he has been optioned, Henderson has remained relatively productive at Triple-A Nashville.
Since June 1, the right-hander has logged 32 2/3 innings to the tune of a 3.86 ERA with a 1.26 WHIP. He has struck out 33 batters and continued to show excellent control, serving up just nine free passes. His ratios were inflated by one blow-up outing where he allowed five runs.
While his success is not questioned, the Brewers do not have a clear opening for Henderson, which makes him a difficult prospect to stash in Week 15. On Sunday, the Brewers welcomed back Brandon Woodruff from nearly a two-year absence. With Woodruff now holding a spot in the rotation, Henderson's best chance to claim a spot is likely through an injury, as Freddy Peralta, Jose Quintana, Quinn Priester, and Misiorowski do not appear to be in any danger of losing their spot.
As a result, fantasy managers should only stash Henderson in deeper 12+ team leagues this week. Managers in shallow formats should instead pivot to Andrew Painter or Bubba Chandler.
Logan Henderson over the last month+ appears to be pushing hard to develop a more rounded arsenal. The slider usage is ticking up and has actually performed far better than the cutter. The results have been effective with a tight shape, while the cutter seems more inconsistent pic.twitter.com/fTew3HrOYd
— Jake McKibbin (@thebrewerblogs) June 26, 2025
- Written by Andy Smith
Jordan Lawlar, INF, Arizona Diamondbacks
Current Level: AAA
Availability: 10% rostered
2025 AAA stats: 53 G, .319/.410/.583, 19 2B, 10 HR, 18 SB
The final prospect we will take a look at this week is Jordan Lawlar of the Arizona Diamondbacks. Lawlar was enjoying an incredible start to the campaign at Triple-A Reno, which earned him a relatively quick promotion to the big leagues.
However, this stint in the majors did not last long, as he failed to tally a hit across an eight-game stretch.
At Triple-A, Lawlar held an impressive .319/.410/.583 line with 19 doubles, 10 home runs, and 18 stolen bases. He made his MLB debut during the 2023 campaign but also struggled, tallying just four games across 14 games in the desert.
Unfortunately, Lawlar suffered a Grade 1 hamstring strain in late June, which is expected to keep him sidelined for the foreseeable future. The top-ranked prospect was eventually shifted to the 7-day IL at Triple-A as well.
With him now on the injured list and expected to miss potentially most of July, fantasy managers should not consider stashing him in any standard redraft leagues for the time being.
Jordan Lawlar to Miss Multiple Weeks With Hamstring Injuryhttps://t.co/64pDdkcoLU
— RotoBaller MLB (@RotoBallerMLB) July 3, 2025
- Written by Andy Smith
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