Baseball America sees a pair of Toronto Blue Jays arms worth tracking for 2027, and both are right-handed pitchers already moving up the organizational ladder.
The outlet named Daniel Guerra and Danny Thompson Jr. as two of five American League pitching prospect sleepers to watch, a group that also included Charlie Weber of the Astros, Gage Ziehl of the Red Sox and Moises Morales of the Rangers.
Guerra has been in the Blue Jays system since Toronto signed him as an international free agent out of Venezuela in 2022. He put together a strong year at Single-A Dunedin last season, finishing with a 3.40 ERA, 1.22 WHIP and 84 strikeouts in 82 innings over 22 appearances. The 22-year-old has kept climbing in 2026, and MLB Pipeline now has him ranked No. 17 on Toronto’s top prospects list.
This season, Guerra moved through three minor league levels and ended up at Triple-A Buffalo. Across 24 games, including 15 starts, he went 5-3 with a 3.23 ERA, 1.30 WHIP and 102 strikeouts in 75.1 innings. At that pace, a look at a major league roster spot as soon as next season would not be a surprise.
Thompson’s rise has been even faster. The Blue Jays drafted him in the eighth round in 2025, and the 24-year-old has already made his way through High-A Vancouver and Double-A New Hampshire this year. In 24 appearances, including 20 starts, he posted a 3-5 record with a 3.41 ERA, 1.16 WHIP, 76 hits allowed and 124 strikeouts in 100.1 innings.
He’s already up to No. 15 on Toronto’s top prospects list, and there’s a chance he opens next season at Triple-A Buffalo. If that progress holds, he could move into the club’s top 10 by next year.
The encouraging part for Toronto is that Guerra and Thompson are part of a much deeper wave of arms in the system. Three of the Blue Jays’ top five prospects are pitchers: Nolan Perry at No. 2, Johnny King at No. 3 and Cole Carlon at No. 4, the club’s first-round pick from this past July’s draft.
There’s more behind them too. Dasan Hill, ranked No. 8, came over from the Twins in the Jeff Hoffman trade.
Gage Stanifer sits at No. 10 after an uneven season that could still point toward a useful bullpen role. Jake Bloss, ranked No. 12, and Brandon Barriera, who is outside the top 30, are headed to the Arizona Fall League.
For Toronto, the list of arms worth watching keeps getting longer.
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