MACK – Let’s Revisit - LHRP - Jefry Yan

 

MACK – Let’s Revisit - LHRP - Jefry Yan

Jefry Yan (left-handed reliever for the New York Mets) has a high-velocity four-pitch mix led by a hard sinker, with plus-to-plus velocity as the standout trait, offset by command issues. 

baseballsavant.mlb.com

He is a 6'3" Dominican lefty (born August 17, 1996) known for elite strikeout rates in the minors, viral “La Sentencia 99” jumping celebrations after Ks, and a long path to the majors (debut August 5, 2026, at age 29). 

nydailynews.com

2026 MLB Pitch Arsenal Yan primarily uses four pitches:

Sinker	45.5%	97.8 mph	Primary pitch; strong arm-side run;  touched 99–101+ mph
Four-Seam	23.8%	97.5 mph	High spin/ride; also reaches 100–101 mph
Slider	23.0%	86.5                mph	High-whiff offering (~52% MLB sample; higher in minors, often ~61% in Triple-A samples); described as playing like a curve or “sweeper/deathball” type
Changeup	7.7%	89.9 mph	Occasional; sits between fastball and sinker speeds

In the minors (especially with Syracuse/Binghamton in 2026), he showed similar usage with even higher strikeout rates (around 43–50% at points) on the same mix—sinker + slider as the main pair, backed by the four-seamer and changeup. 

Both fastballs sit upper-90s with plus velocity for a lefty reliever.

mlbtraderumors.com

Stuff Evaluation (“Plus” Elements)

• Velocity is clearly plus to plus-plus (regularly 97–98+, peaks at 101 mph). He was the first Mets pitcher to hit 100+ mph in 2026.
• Slider generates excellent swing-and-miss and grades as a strong secondary (Stuff+ metrics around 110 in some samples).
• Overall arsenal is interesting and unique for a lefty (hard sinker + four-seam pair, high-velo slider/sweeper hybrid, firm changeup), with good raw stuff that can miss bats at a high rate.
• Command/control is the limiter (walk rates often 15–18%+), which has held him back from sustained MLB success despite the velocity and K ability.

Scouting notes and advanced metrics consistently highlight the electric arm strength and swing-and-miss potential when he locates, which is why the Mets pursued and developed him after prior stops (Angels, Marlins, NPB Seibu Lions, Rockies).

2026 - MLB/Mets - 18-apps, 1-ST, 2-1, 4.87. 20.1-IP, 15-BB, 26-K