With Trey Yesavage's debut in the books, these players are the next prospects to watch

Although MLB Pipeline still has Trey Yesavage in the official prospect rankings, his debut marked his graduation from prospect to big leaguer. While there are always prospects in the pipeline that fans should keep a close eye on, but some notable ones include Johnny King, Arjun Nimmala, and JoJo Parker.

Johnny King

King was drafted by the Toronto Blue Jays in the third round (95th overall) of the 2024 MLB Draft as a left-handed pitcher out of Naples High School in Florida, signing for $1.2 million. In his young professional career, he's put up a solid showing, cruising through two levels. The 6-foot-3, 210-pound left-hander started with the Florida Complex League Blue Jays, pitching 24 innings to the tune of a 1.13 ERA and a 1.53 FIP, with a 41.8 K% and 7.1 BB%.

King was then shipped off to the Single-A Dunedin Blue Jays, where he pitched to a 3.35 ERA and 4.23 FIP in 37.2 innings pitched. His K% was still incredible at 38.1%, but his control suffered, as his BB% went up to 17.9%. King, the Blue Jays’ fifth-best prospect and second-best pitcher (after Tiedemann, who's been shelved for over a year), is impressive with his fastball that sits around 93.5 mph, but can reach 96 mph. His curveball is also above average (graded at 55); however, his changeup still needs some development.

The Florida native is considered a high-upside prospect with an amazing fastball and an impressive curveball; fans should expect him to make just a few starts in Single-A next year before he is off to the next level.

Arjun Nimmala

Nimmala, who was the 20th overall pick in the 2023 MLB Draft, is a first-generation Indian-American prospect. Born in 2005, the shortstop played for the Vancouver Canadians in 2025, where he went off to a strong start to the season before a dip in performance, a potential result of an aggressive promotion. That being said, he displayed an improved strikeout rate and maintained a high walk rate during his slump. 

Considering there is still uncertainty about Bo Bichette's future in Toronto, the third-ranked prospect in the system could be the shortstop of the future. After a brief stint in the Florida Complex League, a 17-year-old Nimmala struggled early on, although he found his power stroke again, hitting 13 home runs with a .564 slugging percentage in Dunedin.

In 2025, Nimmala started out in Vancouver, where he slashed .291/.382/.527 with a 146 wRC+. However, from June onward, he slumped hard, finishing his year slashing .224/.313/.381 ending up with a 91 wRC+. However, he cut down on his abysmal strikeout rate, as he ended the season with a rate of 21.4%. The 42nd-ranked prospect in baseball by MLB Pipeline has encouraging, plus power paired with a strong arm, although his swing-and-miss on off-speed pitches remains his biggest area for devlopment.

JoJo Parker

Parker, another highly drafted shortstop, was selected 8th overall in the 2025 MLB Draft by the Toronto Blue Jays. The left-handed-hitter out of Purvis High School, Mississippi, signed for about $6.2 million, after being praised by scouts for his elite hit-power combinations paired with strong plate discipline. Although his defensive athleticism is viewed as questionable, his arm is solid, and there’s some potential that he moves to second, third, or possibly a corner outfield spot depending on how his defence fares. 

Since he just signed this year and has yet to put up full minor-league numbers, there’s limited performance data so far, but when it comes to potential, he is a very promising prospect. Parker's smooth left-handed swing, mature strike-zone control, and developing exit velocities add to his potential.

The 6-foot-2, 200-pound 18-year-old, and the second-best prospect in the system, was considered the best shortstop in Mississippi, taking home the 2025 Gatorade Player of the Year Award. Although the Blue Jays have eight infielders who are ranked among their top 30 prospects, Parker is projected to have a better upside than many of the names on the list.