Kai-Wei Teng

Kai-Wei Teng

26-Year-Old PitcherSP
San Francisco Giants
2025 Fantasy Outlook
There was no outlook written for Kai-Wei Teng in 2025. Check out the latest news below for more on his current fantasy value.
Signed a one-year contract with the Giants in November of 2024.
Takes another loss against Padres
PSan Francisco Giants
August 19, 2025
Teng (1-3) allowed three runs (two earned) on three hits and a walk while striking out four over 3.1 innings to take the loss versus the Padres on Tuesday.
Analysis
Teng's last two outings have been against San Diego, and he's allowed a total of 10 runs (eight earned) over five innings against the Giants' division rivals. Teng has maintained the last spot in San Francisco's rotation this month, staying in the majors over Carson Whisenhunt when Landen Roupp returned from an elbow injury. That said, Teng's 8.78 ERA and 12:9 K:BB through 13.1 innings over four appearances haven't inspired much confidence in his major-league readiness. If he gets another start, it's projected to be another challenging matchup this weekend in Milwaukee.
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Pitching Stats
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2025 MLB Game Log
2025
2024
2025 MLB Game Log
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Scoring
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2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
66
Last 10 Games
66
Last 5 Games
66
How many pitches does Kai-Wei Teng generally throw?
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
What part of the game does Kai-Wei Teng generally pitch?
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
 
 
-14%
BAA vs LHP
2025
 
 
-30%
BAA vs RHP
2024
 
 
-44%
BAA vs LHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .275 59 10 5 14 3 0 0
Since 2023vs Right .319 61 9 12 15 2 0 3
2025vs Left .303 39 7 3 10 2 0 0
2025vs Right .211 26 5 6 4 1 0 1
2024vs Left .222 20 3 2 4 1 0 0
2024vs Right .393 35 4 6 11 1 0 2
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2023
 
 
-24%
ERA on Road
2025
 
 
-14%
ERA at Home
2024
 
 
-54%
ERA on Road
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 10.64 2.18 11.0 1 1 0 4.9 8.2 0.0
Since 2023Away 8.10 1.65 13.1 0 2 0 8.8 4.7 2.0
2025Home 8.10 1.80 6.2 1 1 0 5.4 6.8 0.0
2025Away 9.45 1.65 6.2 0 2 0 10.8 5.4 1.4
2024Home 14.54 2.77 4.1 0 0 0 4.2 10.4 0.0
2024Away 6.75 1.65 6.2 0 0 0 6.8 4.1 2.7
2023Home 0 0 0 0 0 0 0 0 0
2023Away 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Stat Review
How does Kai-Wei Teng compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
1.33
 
K/9
8.1
 
BB/9
6.1
 
HR/9
0.7
 
Fastball
93.3 mph
 
ERA
8.78
 
WHIP
1.73
 
BABIP
.337
 
GB/FB
1.21
 
Left On Base
37.0%
 
Exit Velocity
77.6 mph
 
Barrels/BBE
2.3%
 
Spin Rate
2513 rpm
 
Balls Hit 95+ MPH
11.6%
 
Swinging Strike
9.1%
 
Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Kai-Wei Teng See More
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More Fantasy News
Rough day vs. Padres
PSan Francisco Giants
August 13, 2025
Teng (1-2) took the loss Wednesday against San Diego, allowing seven runs (six earned) on four hits and four walks over 1.2 innings.
Analysis
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Starting Wednesday
PSan Francisco Giants
August 12, 2025
Teng will start Wednesday's contest against the Padres in San Francisco, Shayna Rubin of the San Francisco Chronicle reports.
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Works well behind opener
PSan Francisco Giants
August 8, 2025
Teng (1-1) allowed three hits and a walk while striking out four over five shutout innings to earn the win over the Nationals on Friday.
Analysis
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Struggles in first MLB start
PSan Francisco Giants
August 2, 2025
Teng (0-1) was the pitcher of record in his start in Saturday's 12-6 loss to the Mets, allowing five earned runs on four hits and three walks while striking out four batters over 3.1 innings.
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Making first MLB start Saturday
PSan Francisco Giants
August 2, 2025
Giants manager Bob Melvin said that Teng will start Saturday's game against the Mets at Citi Field, Susan Slusser of the San Francisco Chronicle reports.
Analysis
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