The Toronto Blue Jays enter 2026 coming off of the franchise’s most successful season in more than 30 years, after falling in extra innings in Game 7 of the World Series against the Los Angeles Dodgers.
Many factors come together to contribute to a season like that – a career-best year for outfielder George Springer at age 35, a postseason performance for the ages from superstar slugger Vladimir Guerrero Jr. and even a few vintage performances in the postseason from future Hall-of-Fame pitcher Max Scherzer.
But perhaps the most important factor in pushing the Jays to the brink of a title was the performance of rookie pitcher Trey Yesavage, who made his MLB debut on Sept. 15 and went on to set both franchise and MLB records in a postseason run for the ages.
Yesavage set a Blue Jays record with 11 strikeouts in his postseason debut for the team against the New York Yankees in the AL Divisional Series, then set an MLB record for strikeouts in a World Series game by a rookie (12) in Game 5 against the Dodgers.
Yesavage’s story was made even more impressive by the fact that he made his professional baseball debut in April of 2025 and ascended through five minor-league levels in one season.
There are many examples of rookies making their mark in the playoffs – Randy Arozarena setting a postseason hits record (29) for the 2020 Tampa Bay Rays, Kyle Schwarber launching mammoth home runs for the 2015 Chicago Cubs, Miguel Cabrera homering off Roger Clemens, his elder by 21 years, for the Miami Marlins in 2003 – but each of those players were top prospects throughout the season.
It’s unlikely we will ever see another story like Yesavage, from professional baseball debut to pitching in Game 7 of the World Series in a seven-month span, but here are some of the top prospects in baseball who could make their mark as rookies in the 2026 postseason.
SS Kevin McGonigle, Detroit Tigers
The countdown has been on for Kevin McGonigle to reshape the Detroit Tigers’ infield ever since he was selected in the first round of the 2023 MLB June Entry Draft (37th overall).
McGonigle entered the 2025 campaign ranked as the No. 23 prospect in baseball, per MLB Pipeline. He slashed .303/.408/.583 over 88 games split across three levels in the minors, and capped off his impressive campaign with an MVP performance in the Arizona Fall League after hitting .362 with 19 walks against 12 strikeouts. The 21-year-old enters the 2026 campaign as MLB Pipeline’s No. 2 prospect.
McGonigle is described as a complete hitter with no weaknesses at the dish – he has patience, power and the ability to hit the ball with authority to all three fields.
The Tigers finished second in the AL Central a year ago and fell in five games in the ALDS to the Seattle Mariners. One of the biggest holes on the roster was at shortstop, where Trey Sweeney made the most starts (82) and slashed .196/.258/.291.
McGonigle is expected to make his major-league debut with the Tigers at some point in the 2026 season, and if he is able to carry his minor-league production over to the majors, the Tigers could make a major step towards the team’s first World Series berth since 2012.
RHP Carlos Lagrange and OF Spencer Jones, New York Yankees
The Yankees have a pair of giants expecting to make their MLB debuts in 2026 – literal giants, in 6-foot-7 pitcher Carlos Lagrange and 6-foot-7 outfielder Spencer Jones.
Lagrange joined the Yankees’ system as an international free agent in 2022, and the 22-year-old righty has worked his way up to Double-A in the three years since.
Lagrange enters the 2026 season as the No. 2 prospect in the Yankees’ system, and No. 79 overall, per MLB Pipeline. He got an invite to major-league camp in Spring Training, and his fastball – which is regularly exceeding 100 mph – has wowed stars on the Yankees squad.
“It’s like, silly. I’ve never seen anything like it,” former Cy Young winner Gerrit Cole said to reporters earlier in March. “It’s wild. I’m just blown away by the velocity every time.”
“I think he can be a great pitcher for us,” outfielder Jasson Domínguez said. “He definitely can help the team. He’s still young, but I think he’s got great stuff … From what I’ve seen, he definitely can make it happen this year.”
Jones, 25, has a dangerous left-handed swing and his impressive power numbers at his size draw obvious comparisons to three-time MVP Aaron Judge. Jones hit 35 home runs in 116 games split between Double-A and Triple-A in 2025.
Jones was optioned to the minor leagues on Monday, but was adamant he will be ready to contribute in the majors after hitting four home runs in Spring Training.
“The biggest thing I’ve gotten out of this year is the feeling that I belong, and that I can compete,” Jones said after being optioned on Mar. 10.
The Yankees fell to the Blue Jays in the ALDS in 2025, and lost to the Dodgers in the World Series in five games in 2024. New York has qualified for the postseason in eight of the past nine seasons, but are seeking the team’s first World Series title since 2009.
RHP Andrew Painter, Philadelphia Phillies
It’s been a long time coming for Philadelphia Phillies righty Andrew Painter. The 22-year-old enters the 2026 season as the No. 28 prospect on MLB Pipeline, and has ranked in the top 30 on MLB Pipeline’s list entering each of the past four seasons.
For all the excitement about Painter, he has been unable to stay on the field – over the past three seasons, Painter has made just 32 starts thanks in large part to Tommy John surgery that wiped away most of his 2023 campaign and all of his 2024 season.
Painter struggled in 26 starts in 2025, with a 5.40 earned-run average across 22 starts at Triple-A Lehigh Valley and a 5.26 ERA overall.
Painter has not allowed an earned run in two Spring Training starts, and the team is excited for the opportunity to have a confident Painter on the major-league squad, especially after they lost lefty Ranger Suarez to the Boston Red Sox in free agency over the off-season.
Philadelphia has qualified for the postseason in four-straight years, and played in the World Series in 2022, where they lost to the Houston Astros in six games. The Phillies are chasing their first World Series title since 2008.
LHP Ricky Tiedemann, Toronto Blue Jays
The Blue Jays’ rotation is overflowing with options, with Yesavage set to headline a staff that also includes Kevin Gausman, Jose Berrios and Shane Bieber, along with free-agent acquisitions Dylan Cease and Cody Ponce.
That would be a comfortable rotation for any manager in the majors, and that doesn’t even include capable starter Eric Lauer, who is expected to pitch from the bullpen after starting 15 games for Toronto in 2025.
The path to a starting spot is not clear for Tiedemann, but there is no denying the exciting talent of the imposing lefty.
Standing 6-foot-4 and featuring a fastball that can reach 100 mph, Tiedemann offers a rare pitch mix for a lefty that can overwhelm hitters. In 2023, Tiedemann experienced a season similar to Yesavage’s 2025, where he ascended from Rookie Ball to Triple-A in just 15 starts and struck out an astounding 82 batters over 44 innings.
But Tiedemann, 23, has pitched in just eight games since then and was shut down for a few weeks early in Spring Training after he experienced elbow discomfort in his throwing arm.
The first order of business for Tiedemann this year is getting healthy and showcasing his talent on the field. After that, he is ready for his talent to propel him to the majors, in any role that the team needs.
“Whatever the team needs, you ought to be ready for it and you ought to be excited for it,” Tiedemann said to MLB.com’s Keegan Matheson in February. “Not many guys get the opportunity. If you’re putting up the numbers, whether you’re starting or relieving, just to get that call would be a blessing for me. I’ll be ready. No matter when they call, I’ll be ready for it and I’ll be excited.”
Fifteen pitchers made starts for Toronto a year ago. It would have been impossible in March to predict the eventual role Yesavage would play by October. A healthy Tiedemann has a chance to replicate those results in 2026.