Roki Sasaki

Roki Sasaki

23-Year-Old PitcherSP
Los Angeles Dodgers
2025 Fantasy Outlook
As a 20-year-old NPB phenom, Sasaki threw a perfect game and followed that up with eight perfect innings in his next start. Three years later, he's set to get his shot at the MLB level. He's sure to generate a ton of interest due to his youth and potential, but there's plenty of downside with Sasaki as well. First and foremost are durability concerns. He topped out at 20 starts and 129.1 innings in 2022 and has averaged 16.5 starts and 101 innings over the last two years while battling oblique and arm issues. He's taking steps to address those concerns by decreasing his fastball velocity and pitching to contact more often, with his fastball now sitting in the upper 90s instead of triple digits and his K% falling from 39.1% in 2023 to 28.6% in 2024. That could mean Sasaki is simply getting worse rather than making a conscious decision to stay healthy, as it did result in a career-high ERA - but when a 2.35 ERA represents a career high, expect MLB teams to remain very interested. Read Past Outlooks
RANKS
Rest of Season From Preseason
#105
ADP
Signed a one-year, $760,000 contract with the Dodgers in March of 2025.
Nails down save in Game 1 win
PLos Angeles Dodgers
October 4, 2025
Sasaki earned the save in Saturday's 5-3 win over the Phillies in Game 1 of the National League Division Series, allowing one hit and no walks with one strikeout in a scoreless ninth inning.
Analysis
After missing more than four months with a right shoulder impingement, Sasaki returned to the Dodgers in the final week of the regular season as a bullpen arm and earned a spot on the postseason roster. With Los Angeles' bullpen troubles this season, manager Dave Roberts deployed both Tyler Glasnow and Sasaki in relief in Game 1 on Saturday. After Glasnow and Alex Vesia combined for six outs, Sasaki took the ball in the bottom of the ninth and struck out J.T. Realmuto looking before allowing a double to Max Kepler. Sasaki then got Nick Castellanos to ground out and Bryson Stott to foul out to preserve the win. Sasaki hit triple digits with his fastball four times across 11 pitches in the ninth inning.
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Pitching Stats
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2025 MLB Game Log
2025
2025 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
54
Last 10 Games
53
Last 5 Games
22
How many pitches does Roki Sasaki 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 Roki Sasaki 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
 
 
-100%
BAA vs LHP
2025
No Stats
2024
 
 
-100%
BAA vs LHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .000 8 2 3 0 0 0 0
Since 2023vs Right .143 9 3 2 1 0 0 0
2025vs Left .000 1 1 0 0 0 0 0
2025vs Right .000 2 1 0 0 0 0 0
2024vs Left .000 7 1 3 0 0 0 0
2024vs Right .200 7 2 2 1 0 0 0
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
 
 
-100%
ERA at Home
2025
 
 
-100%
ERA at Home
2024
 
 
-100%
ERA at Home
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 0.00 0.00 1.0 0 0 0 18.0 0.0 0.0
Since 2023Away 4.33 1.41 27.0 1 0 0 7.3 6.3 1.3
2025Home 0.00 0.00 1.0 0 0 0 18.0 0.0 0.0
2025Away 4.50 1.33 24.0 1 0 0 7.1 5.3 1.5
2024Home 0 0 0 0 0 0 0 0 0
2024Away 3.00 2.00 3.0 0 0 0 9.0 15.0 0.0
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 Roki Sasaki 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
1.27
 
K/9
6.9
 
BB/9
5.4
 
HR/9
1.5
 
Fastball
100.7 mph
 
ERA
4.46
 
WHIP
1.43
 
BABIP
.244
 
GB/FB
1.11
 
Left On Base
78.0%
 
Exit Velocity
84.2 mph
 
Barrels/BBE
7.8%
 
Spin Rate
1632 rpm
 
Balls Hit 95+ MPH
28.9%
 
Swinging Strike
0.0%
 
Prospect Rankings History
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Defensive Stats
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Recent RotoWire Articles Featuring Roki Sasaki See More
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More Fantasy News
Earns spot on wild-card roster
PLos Angeles Dodgers
September 29, 2025
Manager Dave Roberts stated Monday that Sasaki will be on the roster for the team's National League Wild Card Series against the Reds, Bob Nightengale of USA Today reports.
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Pops triple digits on radar gun
PLos Angeles Dodgers
September 27, 2025
Sasaki recorded the second hold of his career in Friday's 3-2 win over the Mariners, giving up one hit and striking out two in a scoreless seventh inning.
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Shines in first career relief outing
PLos Angeles Dodgers
September 25, 2025
Sasaki notched a hold against Arizona on Wednesday, striking out two batters in a perfect seventh inning.
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Officially activated
PLos Angeles Dodgers
September 24, 2025
The Dodgers reinstated Sasaki (shoulder) from the 60-day injured list Wednesday, David Vassegh of AM 570 LA Sports reports.
Analysis
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Returning Wednesday
PLos Angeles Dodgers
Shoulder
September 23, 2025
The Dodgers will reinstate Sasaki (shoulder) from the 60-day injured list Wednesday, Sonja Chen of MLB.com reports.
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Latest Fantasy Rumors
Will pitch out of bullpen
PLos Angeles Dodgers
September 24, 2025
Sasaki, who's set to return Wednesday from a shoulder injury, will pitch out of the bullpen once activated, manager Dave Roberts told Sonja Chen of MLB.com.
Analysis
The Dodgers have an open spot on their 40-man roster, so Sasaki only needs to be activated after missing more than four months due to a shoulder impingement. The Japanese hurler made seven appearances during a rehab assignment at the Triple-A level and pitched out of the bullpen in the last two, setting the stage for his new role in the majors. Sasaki tossed two scoreless innings with three strikeouts across his two relief outings.
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