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.
Gets endorsement as team's closer
PLos Angeles Dodgers
October 8, 2025
Manager Dave Roberts said Tuesday that Sasaki is "definitely the primary option now" to close games for the Dodgers, though the skipper noted that the rookie's availability will be contingent on his workload, Alden Gonzalez of ESPN.com reports. "We have to win X amount of games [to secure a championship], and he's not going to close every game," Roberts said of Sasaki. "It's just not feasible, so, you've got to use other guys."
Analysis
Sasaki struggled to a 4.72 ERA, 1.49 WHIP and 24:22 K:BB in 34.1 innings over eight starts with the Dodgers to begin the season before he landed on the injured list May 13 due to a right shoulder impingement, but he's proven to be a dynamic weapon out of the bullpen since being reinstated Sept. 24. After collecting two holds and striking out four batters over two scoreless frames in two relief outings to close out the regular season, Sasaki retired the side on 11 pitches in his lone appearance against the Reds in the wild-card round, and he's converted a pair of save chances with ease in the first two games of the NLDS versus the Phillies. Given that the bullpen had been a relative weakness for the Dodgers down the stretch, it's not too surprising that Sasaki has quickly emerged as Los Angeles' most trusted reliever after he pitched effectively in his initial appearances following his return from the IL. With Clayton Kershaw headed for retirement following the playoffs, the Dodgers presumably still envision Sasaki getting stretched back out over the winter and settling into the vacated rotation spot in 2026, but the rookie right-hander looks like he'll rank as the preferred choice for ninth-inning duties for the duration of the team's postseason run.
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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
50
Last 10 Games
46
Last 5 Games
10
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
 
 
-30%
BAA vs RHP
2025
 
 
-100%
BAA vs RHP
2024
 
 
-100%
BAA vs LHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .143 10 2 3 1 1 0 0
Since 2023vs Right .100 12 4 2 1 0 0 0
2025vs Left .333 3 1 0 1 1 0 0
2025vs Right .000 5 2 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
No Stats
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 2.08 1.62 4.1 0 0 2 8.3 10.4 0.0
2025Home 0.00 0.00 1.0 0 0 0 18.0 0.0 0.0
2025Away 0.00 0.75 1.1 0 0 2 6.8 0.0 0.0
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
100.3 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
Recent RotoWire Articles Featuring Roki Sasaki See More
More Fantasy News
Secures second save of NLDS
PLos Angeles Dodgers
October 6, 2025
Sasaki recorded a one-out save in Game 2 of the National League Division Series against the Phillies on Monday.
Analysis
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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
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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.
Analysis
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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.
Analysis
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Latest Fantasy Rumors
Primary option in save situations
PLos Angeles Dodgers
October 8, 2025
Sasaki will operate as the Dodgers' primary option in save situations, Dave Roberts told Jack Harris of the Los Angeles Times this week.
Analysis
Sasaki recorded a one-out save in Game 2 of the NLDS against the Phillies after retiring Trea Turner with runners on the corners and two outs in a 4-3 win Monday. It was the first time in his MLB career that he was called upon in the middle of an inning, but it's worth noting that Sasaki has finished three of the Dodgers' four postseason games so far.
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