Blue Jays Prospect Johnny King Is Forcing A Bigger Conversation

With his commanding performances at Double-A, Blue Jays prospect Johnny King is rapidly emerging as a pitching force worth watching closely.

Johnny King’s first run at Double-A is starting to look like exactly the kind of step forward the Blue Jays were hoping for.

The 20-year-old left-hander, Toronto’s No. 3 prospect on MLB Pipeline, delivered his best outing yet for the Double-A New Hampshire Fisher Cats on Wednesday, throwing five shutout innings in a 1-0 loss to the Binghamton Rumble Ponies, the Mets’ Double-A club. King allowed three hits and one walk while striking out eight, matching his season high and setting a new personal best for punchouts in a start with New Hampshire.

It was also his second straight scoreless appearance since the promotion, another sign that he’s settling in fast against tougher competition. With New Hampshire’s regular season winding down, King will have limited chances left to add to what’s already been a sharp finish to his 2026 season.

Toronto grabbed King in the third round of the 2024 MLB Draft out of high school, and he has moved quickly through the system ever since. He reached Double-A in just his second year in the organization, a quick rise that reflects how well he’s handled each new stop.

Across two minor league levels this season, King owns a 2.91 ERA in 25 starts, with 134 strikeouts over 102 innings. Last year, the 6-foot-3 lefty posted a 2.48 ERA and 105 strikeouts in 61 2/3 innings.

His 2026 season began at High-A with the Vancouver Canadians, where he logged a 3.21 ERA and 112 strikeouts in 84 innings across 21 starts. That performance earned him the August promotion to New Hampshire, and he’s made a strong first impression there: a 1.50 ERA and 22 strikeouts in 18 innings over his first four starts.

New Hampshire’s regular season ends on Sept. 13, so King is expected to make only one more Double-A start this year. If this stretch is any indication, he could open 2027 back at Double-A and move up quickly from there. A strong showing at Triple-A after that would put the Blue Jays prospect in position to join Toronto’s rotation in late 2027.

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