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Kai-Wei Teng

Astros
Number #17
Position RP
Bats R
Throws R
Age 28
Height 6' 4"
Weight 241 lbs
Birth Place Taichung, Taiwan
Born Jan 12, 1998

Key Insights

2026
There is one pitch of his that keeps getting hit

Contact off Teng's 4-seam fastball leaves the bat at 95.0 mph, against 86.0 off his sweeper.

114 and 153 of them thrown.
One pitch of his runs sideways more than almost anyone's

Teng's sinker moves 16.3 inches toward the third-base side, the biggest horizontal move in his arsenal.

69 thrown, averaging 93.8 mph.
The angle he throws from is unusual, and hitters notice

Teng releases the ball from a low three-quarters slot, about 25 degrees above horizontal and 2.1 feet to the third-base side of the rubber.

416 tracked release points, averaging 5.4 feet off the ground.
He pitches around the zone once runners are on

Teng throws 38% of his pitches in the zone with a runner in scoring position and 45.2% with the bases empty.

71 pitches with a runner in scoring position, 345 with the bases empty.
This is the pitch he goes to when he needs the out

With two strikes Teng goes to the 4-seam fastball: 34.4% of his two-strike pitches, against 24.2% the rest of the time.

131 two-strike pitches in 2026.
His ball moves more than the hitter expects it to

Teng's stuff spins at 2,529 rpm, 91st percentile in the league.

416 pitches in 2026. 91st percentile among qualified pitchers in 2026, 51st in MLB.

Movement Profile (Induced Break)

Catcher's Perspective • Pitch movement relative to a spinless ball

Player Bio Data
DOB Jan 12, 1998
Birth Place Taichung, Taiwan
Height 6' 4"
Weight 241 lbs LBS
Bats/Throws R/R