The Blue Jays’ season is done, but October still matters for a handful of players trying to force their way into the conversation. Toronto has eight prospects in the Arizona Fall League, and the early returns have offered a mixed bag - enough to keep the organization watching closely as it looks ahead to 2027.
On the pitching side, Jake Bloss has been the cleanest success story so far. Brandon Barriera, Yondrei Rojas, Fernando Perez and Gilberto Batista have all taken turns on the mound too, but Bloss is the one making the strongest case with his work for the Solar Sox.
In three Fall League appearances, Bloss has logged 6.2 innings, struck out six and posted a 2.70 ERA with a 0.75 WHIP. His best outing came recently, when he worked 2.2 innings, gave up one earned run and punched out six. His fastball reached 95.6 mph, and he generated six whiffs in the start.
That’s a nice step for Bloss, who is out of options heading into next season. If he keeps stacking outings like that, he could put himself in position to grab a spot on the Opening Day roster as a reliever. Health remains part of the equation, and so does continuing to sharpen his pitches and mechanics.
Barriera’s Fall League run has gone in the opposite direction. Used out of the bullpen, the left-hander has thrown 3.2 innings and allowed six walks while striking out only two. His ERA sits at 4.91, and his WHIP is 2.18.
For Barriera and the Blue Jays, the value here may be less about the results and more about the reps. He has spent most of his career dealing with injuries, and the Fall League’s competition level is typically around Double-A. Since Barriera only reached High-A in 2026, he may be facing a tougher assignment than some of his peers.
Rojas has been more stable. Through six innings, he owns a 3.00 ERA and 1.33 WHIP with a 5:4 strikeout-to-walk ratio. The swing-and-miss stuff that showed up more last season has not been there in the same way, but he did reach Triple-A in 2026 and is Rule 5 eligible this offseason, which means another team could take notice if he finishes strong.
Perez has made just one outing since the last update, but it was a clean one: 1.2 scoreless innings, one walk and two strikeouts. He spent most of 2026 on the Development List after command problems, and even with a good Fall League finish, it would be a surprise if a club selected the 22-year-old in the Major League portion of the Rule 5 Draft.
Batista has struggled as well. He’s made four appearances and compiled five innings with a 5.40 ERA and a 2.00 WHIP, along with a 6:5 K:BB ratio. The walk issues that hurt him in 2026 have shown up again in the Fall League, and he won’t be Rule 5 eligible until 2027.
Among the hitters, Jake Cook has continued to make noise. In eight games, the 20th-ranked Blue Jays prospect is slashing .333/.394/.333 with three RBI, seven stolen bases and a 9:2 K:BB ratio.
His speed stands out, but his 45-grade hit tool still needs work, and he’ll have to cut down on the strikeouts if he wants to get the most out of his game. He doesn’t bring much power, so the bat-to-ball piece matters.
Jake Casey has had the roughest offensive showing of the bunch. In 10 games, the 23rd-ranked prospect is hitting .094/.275/.219 with one home run, three RBI, six stolen bases and a 16:3 K:BB ratio.
He does have average power, but the hit tool is a problem, and he has looked overmatched in the Fall League. At 23, the clock is ticking for him.
Aaron Parker has been one of the more encouraging names in the group, even if the playing time has come in fits and starts. In four games, the 23-year-old is hitting .438/.550/.625 with one homer, five RBI, one stolen base and a 2:4 K:BB ratio. The sample is tiny, but the strikeout reduction is a positive sign.
Parker also added left field to his defensive mix after spending most of 2026 at catcher, which could help him reach the majors sooner. Alejandro Kirk and Brandon Valenzuela are the current catchers on Toronto’s side, so that extra versatility could matter.
For now, Bloss and Parker have given the Blue Jays something to hang onto. The next step is turning these Fall League reps into real progress by the time camp rolls around.
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