Jack Flaherty
Jack Flaherty
24-Year-Old PitcherSP
St. Louis Cardinals
2019 Fantasy Outlook
The year didn't end on a positive note, with Flaherty posting a 5.34 ERA in September, but the overall body of work was stellar, especially for a 22-year-old taking his first real spin through the major leagues. Flaherty's fastball/slider combo is already one of the best in the game, and he can also change speeds although the changeup was a clear fourth offering behind the heater, slider and curve. He used that arsenal to strike batters out at a 29.6% clip, which was a top-10 mark among all pitchers with at least 150 innings. He shot himself in the foot occasionally with walks (3.5 BB/9) and homers (1.19 HR/9), but even marginal improvement to his 57.2% first-pitch strike rate should help on both fronts, and he's proven durable so far in his young professional career. With a rotation spot secured on what looks like a contending club, Flaherty should be viewed as a solid SP2 in mixed leagues. Read Past Outlooks
RANKSFrom Preseason
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$Signed a one-year, $562,100 contract with the Cardinals in March of 2019.
Named starter for NLCS Game 3
PSt. Louis Cardinals
October 10, 2019
Flaherty was named the starter for Game 3 of the National League Championship Series against the Nationals on Monday, Anne Rogers of MLB.com reports.
ANALYSIS
Flaherty was effective in his two starts in the NLDS, posting a 2.76 ERA with a 16:2 K:BB over 13 innings against the Braves. Miles Mikolas will start Game 1 of the series with Adam Wainwright handling the starting duties for Game 2.
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Pitching Appearances Breakdown
Average Pitch Count
97
Last 10 Games
101
Last 5 Games
93
How many pitches does Jack Flaherty 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 Jack Flaherty 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 2017
 
 
-6%
BAA vs RHP
2019
 
 
-10%
BAA vs RHP
2018
 
 
-5%
BAA vs LHP
2017
 
 
-34%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2017vs Left .207 744 186 74 138 22 1 25
Since 2017vs Right .194 737 247 50 128 21 2 24
2019vs Left .202 388 97 30 72 12 0 14
2019vs Right .182 384 134 25 63 12 1 11
2018vs Left .194 310 83 39 52 8 1 7
2018vs Right .204 305 99 20 56 9 0 13
2017vs Left .341 46 6 5 14 2 0 4
2017vs Right .225 48 14 5 9 0 1 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2017
 
 
-21%
ERA at Home
2019
 
 
-24%
ERA at Home
2018
 
 
-20%
ERA at Home
2017
 
 
-7%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2017Home 2.80 0.91 176.2 11 10 0 10.4 2.2 1.2
Since 2017Away 3.56 1.19 192.0 8 9 0 10.7 3.8 1.2
2019Home 2.37 0.79 98.2 7 4 0 10.7 1.8 1.2
2019Away 3.13 1.15 97.2 4 4 0 10.5 3.2 1.1
2018Home 2.93 1.03 67.2 4 4 0 10.5 2.7 1.2
2018Away 3.67 1.16 83.1 4 5 0 11.1 4.2 1.2
2017Home 6.10 1.26 10.1 0 2 0 7.0 3.5 1.7
2017Away 6.55 1.82 11.0 0 0 0 9.8 4.9 1.6
More Splits View More Split Stats
Stat Review
How does Jack Flaherty 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
4.20
 
K/9
10.6
 
BB/9
2.5
 
HR/9
1.1
 
Fastball
93.9 mph
 
ERA
2.75
 
WHIP
0.97
 
BABIP
.254
 
GB/FB
1.11
 
Left On Base
82.6%
 
Exit Velocity
86.5 mph
 
Barrels/BBE
6.9%
 
Spin Rate
2217 rpm
 
Balls Hit 95+ MPH
30.5%
 
Swinging Strike
14.0%
 
Advanced Pitching Stats
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Defensive Stats
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Recent RotoWire Articles Featuring Jack Flaherty
The Z Files: My Top 20 Starting Pitchers
16 days ago
Todd Zola offers his first look at the top hurlers in his rankings and suggests Jack Flaherty may be ready to join the league's elite on the mound.
DraftKings MLB: Monday Showdown Picks
33 days ago
Christopher Olson tees up Game 3 of the NLCS on Monday, providing his recommendations for a winning lineup.
FanDuel MLB: Monday NLCS Breakdown
33 days ago
Stephen Strasburg and Jack Flaherty face off in Game 3 of the NLCS, and Chris Bennett offers his suggestions for FanDuel players Monday.
Yahoo DFS Baseball: Sunday-Monday Picks
34 days ago
Chris Morgan says the Yankees' James Paxton comes in as the most vulnerable of the four projected starters, which is why he's promoting a bunch of Astros' bats.
FanDuel MLB: Wednesday Breakdown
38 days ago
Sasha Yodashkin looks over Wednesday's two-game slate as Ronald Acuna carries Atlanta's offense into a winner-take-all Game 5 against the Cardinals.
Past Fantasy Outlooks
2018
2017
2016
2015
Once seen as a likely No. 4 or No. 5 starter, the projectable 6-foot-4 righty finally delivered on the promise evaluators had long envisioned, with his fastball velocity jumping from the low-90s to the mid-90s in 2017. Exceptional command allowed him to profile as a back-end starter when he had middling stuff, and now that command allows him to project as a No. 3 starter. In addition to an improved fastball, Flaherty's slider also took a step forward, now profiling as his second-best offering. His curveball is more of a show-me pitch and his changeup is still developing, but has a chance to be a quality third pitch. Flaherty will not strike out a batter per inning, but should eventually be an asset in ERA and WHIP, and is ready to approach 200 innings. He got a brief taste of the majors last season, and will compete for a rotation spot this spring. One way or another, he figures to spend the bulk of 2018 in the big-league rotation, and makes for a decent flier at the end of deep-league drafts.
The 21-year-old Flaherty may not have the upside of some of the other pitchers in the St. Louis organization, but he achieved a good deal of success at High-A in 2016. The former first-round pick posted a 126:45 K:BB in 134 innings at that level. His fastball sits in the low-90s and is certainly not overpowering, but it does have a lot of movement. His changeup is above average, and Flaherty also features an emerging curveball and slider. In addition, Flaherty possesses an ideal frame at 6-foot-4, 205 pounds that should hold up to the rigors of being a rotation workhorse. Flaherty has the upside of a No. 2 starter and will begin the 2017 campaign at Double-A working to improve his secondary offerings.
Despite missing almost two months with a back injury at the start of the season, Flaherty managed to pass his first test pitching in a full-season league with flying colors. The 6-foot-4 righty posted a 2.84 ERA (2.83 FIP) with a 1.29 WHIP and 97 strikeouts in 95 innings with Low-A Peoria. He probably should have been challenged with a late-season promotion to the Florida State League, as his four-pitch mix was more than enough to dominate Low-A hitters. Flaherty will get his chance with High-A Palm Beach to start his age-20 season, but this may not be a one level per year arm, as the Cardinals might want to see how he fares in the upper levels at some point in 2016. A first-round pick in 2014, Flaherty has three pitches that could reach plus status, giving him a No. 2 ceiling, with the realistic floor of a No. 4 starter.
The Cardinals took Flaherty in the first round of the 2014 draft, inking the 6-foot-4 righty with a bonus well over the slot value for the No. 34 pick. He's several years away from contributing at the big league level but the Cardinals spent a lot to keep him from going to North Carolina for college. He was able to get in six starts in the Gulf Coast League for the Cardinals, posting an impressive 1.59 ERA and 28 strikeouts in just 22.2 innings as an 18-year-old. He could take some big steps forward in 2015, his first full year where his focus will be entirely on pitching, and if he can finish the season in High-A for the Cardinals it will be a great sign of things to come.
More Fantasy News
Six dominant innings
PSt. Louis Cardinals
October 9, 2019
Flaherty (1-1) earned the win with six innings of one-run ball, giving up four hits and one walk with eight strikeouts in Wednesday's 13-1 win over the Braves in Game 5 of the National League Division Series.
ANALYSIS
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Named Game 5 starter
PSt. Louis Cardinals
October 7, 2019
Flaherty will start Game 5 of the National League Division Series against the Braves on Wednesday should it be necessary, Anne Rogers of MLB.com reports.
ANALYSIS
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Confirmed as Game 2 starter
PSt. Louis Cardinals
October 2, 2019
Flaherty will start Game 2 of the National League Division Series against the Braves on Friday, Anne Rogers of MLB.com reports.
ANALYSIS
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Cruises to victory
PSt. Louis Cardinals
September 30, 2019
Flaherty (11-8) earned the win against the Cubs on Sunday, hurling seven scoreless innings and giving up two hits and one walk while striking out six.
ANALYSIS
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Slated to start Sunday
PSt. Louis Cardinals
September 28, 2019
Flaherty will start Sunday's season finale against the Cubs, Rob Rains of StLSportsPage.com reports.
ANALYSIS
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