Merrill Kelly
Merrill Kelly
31-Year-Old PitcherSP
Arizona Diamondbacks
2020 Fantasy Outlook
Kelly, who signed with Arizona last December following a four-year stint in the KBO, led the Diamondbacks with 183.1 innings in 2019, though he struggled with consistency, going 13-14 with a 4.42 ERA and 1.32 WHIP across 32 starts. Kelly allowed too much loud contact (9.5 Barrel% and 42.2 Hard%), which, coupled with his flyball tendencies, resulted in a 1.4 HR/9. He also showed noticeable home/away splits, performing much better at home -- likely due in part to Chase Field's humidor. The righty flashed an uptick in velocity in his first four starts in September, resulting in a 1.00 ERA and 9.3 K/9. His final start of the year was not so pretty, but it was a strong finish overall and that should have him pretty well locked into a rotation spot for 2020. Keep an eye on his velocity in spring training, because if Kelly maintains the increased velo, he could be a significant profit earner as a late-round pick. Read Past Outlooks
$Signed a two-year, $5.5 million contract with the Diamondbacks in December of 2018. The contract includes a $4.25 million club option for 2020 and a $5.25 million club option for 2021.
Flawless until fourth
PArizona Diamondbacks
March 8, 2020
Kelly allowed two runs on three hits and one walk while striking out three over four innings in Saturday's spring start against the Padres.
ANALYSIS
Kelly navigated the first three innings allowing just a walk and a hit, but San Diego first baseman Ty France took him deep in the fourth. The right-hander needed 56 pitches (37 strikes) to complete his four innings. "When you put together a baseball game and looking at starting pitching," manager Torey Lovullo told Richard Morin of the Arizona Republic, "you're looking for what Kelly gave us. He was on the attack. I could feel in the dugout that he was doing a good job with his fastball." It was Kelly's second Cactus League start as he works toward a possible spot in the rotation to begin the season. Kelly's role partly depends on the availability of Mike Leake (wrist).
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Pitching Stats
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2019
2019 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
93
Last 10 Games
95
Last 5 Games
98
How many pitches does Merrill Kelly 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 Merrill Kelly 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
 
 
-10%
BAA vs RHP
2019
 
 
-10%
BAA vs RHP
2018
No Stats
2017
No Stats
BAA Batters K BB H 2B 3B HR
Since 2017vs Left .274 357 62 31 89 18 3 9
Since 2017vs Right .247 420 96 26 95 20 1 20
2019vs Left .274 357 62 31 89 18 3 9
2019vs Right .247 420 96 26 95 20 1 20
2018vs Left 0 0 0 0 0 0 0 0
2018vs Right 0 0 0 0 0 0 0 0
2017vs Left 0 0 0 0 0 0 0 0
2017vs Right 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2017
 
 
-36%
ERA at Home
2019
 
 
-36%
ERA at Home
2018
No Stats
2017
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2017Home 3.49 1.15 95.1 7 5 0 8.8 1.8 1.1
Since 2017Away 5.42 1.49 88.0 6 9 0 6.6 3.9 1.7
2019Home 3.49 1.15 95.1 7 5 0 8.8 1.8 1.1
2019Away 5.42 1.49 88.0 6 9 0 6.6 3.9 1.7
2018Home 0 0 0 0 0 0 0 0 0
2018Away 0 0 0 0 0 0 0 0 0
2017Home 0 0 0 0 0 0 0 0 0
2017Away 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Stat Review
How does Merrill Kelly 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
2.77
 
K/9
7.8
 
BB/9
2.8
 
HR/9
1.4
 
Fastball
91.9 mph
 
ERA
4.42
 
WHIP
1.31
 
BABIP
.302
 
GB/FB
1.38
 
Left On Base
72.9%
 
Exit Velocity
89.9 mph
 
Barrels/BBE
8.9%
 
Spin Rate
2411 rpm
 
Balls Hit 95+ MPH
40.3%
 
Swinging Strike
9.8%
 
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 Merrill Kelly
The Z Files: Winning Tendencies, Part Four
10 days ago
Todd Zola continues his breakdown of last year's NFBC Main Event rosters and explains why he thinks Christian Yelich showed up on so few league-winning squads.
Mound Musings: The Sixth Man
19 days ago
This week, Brad Johnson focuses on potential six-man rotations and highlights higher profile kids like Detroit’s Casey Mize who could have opportunities later in the season.
MLB Barometer: Risers & Fallers
22 days ago
Erik Halterman analyzes players whose stocks are changing with the delay of the season, including Howie Kendrick, who could prove to be a big bargain.
Mound Musings: A Look at Pitching in the NL West
75 days ago
Brad Johnson analyzes the National League West, where in Colorado, German Marquez will be put to the test, when MLB play resumes.
Spring Training Job Battles: Early March Update
80 days ago
Erik Halterman analyzes the latest spring training job battles, including the Diamondbacks bullpen where Archie Bradley has yet to be named the closer.
2019 Fantasy Outlook
Kelly signed with Arizona and will get a chance to win a spot in the starting rotation after three seasons playing in South Korea's top professional league. An eighth-round draft pick by Tampa Bay, he got as far as Triple-A, where he had a 2.76 ERA and 8.5 K/9 in 2014, before going overseas. Kelly thrived in the KBO with a 3.80 ERA in four seasons while leading the SK Wyverns to the 2017 championship. His 4.09 ERA from 2017 doesn't look great, but it ranked in the top 10 in a hitter-friendly league, and he had a 9.0 K/9 with outstanding control (2.1 BB/9). Kelly says his velocity improved while in South Korea to the low-90s from the high-80s while in Triple-A. He'll be trying to make a unique transition as few players have moved to Major League Baseball from the KOB, and he's also doing so without any major-league experience. He's a fantasy baseball wild card.
More Fantasy News
Makes first spring start
PArizona Diamondbacks
March 3, 2020
Kelly allowed one run on three hits and one walk while striking out three over 2.2 innings in Monday's spring game against the Giants.
ANALYSIS
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Throws in relief
PArizona Diamondbacks
February 27, 2020
Kelly allowed two runs on three hits and one walk over 1.1 innings of relief in Wednesday's game against Oakland.
ANALYSIS
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Hit hard in final start
PArizona Diamondbacks
September 25, 2019
Kelly (13-14) allowed five earned runs on eight hits and two walks while striking out seven across six innings to earn the win Wednesday against the Cardinals.
ANALYSIS
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Cites mechanical, mental tweaks
PArizona Diamondbacks
September 21, 2019
Kelly said he stopped a summer slide by making two significant adjustments, one mechanical and the other mental, Nick Piecoro of the Arizona Republic reports.
ANALYSIS
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Holds Padres scoreless
PArizona Diamondbacks
September 20, 2019
Kelly (12-14) picked up the win Friday after holding the Padres scoreless across seven innings, allowing two hits and three walks while striking out nine.
ANALYSIS
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