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Carter Kieboom
Trending: ↑ 18%
SS | B/T: R/R | 6' 2" 210LBS | Age: 22

Draft: 2016 | Rd: 1, #28, Washington Nationals | Walton (GA) HS
MLB Pipeline Rank
Poor Avg Great

Stats

PA AB R H HR RBI SB AVG OBP SLG OPS
2019 43 39 4 5 2 2 0 .128 .209 .282 .491
1 Season 43 39 4 5 2 2 0 .128 .209 .282 .491
AVG HR RBI SB OPS
2019 .128 2 2 0 .491
1 Season .128 2 2 0 .491

Standard MLB Batting Statistics

SeasonTmLGGPAABRH2B3BHRRBIBBSOSBCSHBPAVGOBPSLGOPS
2019 WSH NL 11 43 39 4 5 0 0 2 2 4 16 0 0 0 .128 .209 .282 .491
*: All Star Season, Rankings AL/NL: Top 5 10 15 20      Click for Chart.

Advanced MLB Batting Statistics

SeasonTmLGPATBLOBSACSFBABIPXBHGIDPGIDPONPP/PAK/PAHR/PABB/KISOROEWO
2019 WSH NL 43 11 21 0 0 .143 2 0 3 168 3.907 .372 .047 .250 .154 .154 0

Scouting Report

2020

The first of Washington's back-to-back picks in the first round of the 2016 Draft, Kieboom entered the organization four years after the Nationals had drafted his brother Spencer, a catcher who's seen parts of two seasons in the big leagues, in the fifth round. A hamstring injury limited Carter in his first full season, but he bounced back in 2018 with a breakout campaign that saw him reach Double-A at age 20 en route to winning the Nationals Minor League Player of the Year Award. He continued to move quickly in 2019, earning his first big league callup in late April in the wake of Trea Turner's injury and homering in two of his first three games. He ultimately hit just .128 over 11 games with Washington before returning to Triple-A, where he enjoyed the best offensive performance of his career.

Kieboom's offensive game has come along quickly in the pro ranks, and scouts like his chances of becoming a plus hitter with at least average power. Plus bat speed and a short, direct barrel path highlight his balanced right-handed swing and make it difficult for pitchers to beat him with velocity. He has natural feel for hitting to all fields, with plus raw power to his pull side that should play more from line to line as he gets stronger. He has some swing-and-miss tendencies but employs a strong overall approach that nets him plenty of walks and fuels his on-base skills. And while his speed grades out as average, Kieboom gets the most out of it with his quick feet and keen instincts.

Achieving a stronger, more consistent arm slot has been a focal point of Kieboom's defensive development, and while he has made some noticeable gains, he still struggles to consistently get on top of his throws, and his accuracy suffers as a result. The Nats increased his reps at second base in 2019, and many evaluators believe it will be his long-term defensive home. Either way, Kieboom should hit enough to profile at either middle-infield spot and has the potential to develop into a quality everyday player, if not more.


2019

Scouting grades: Hit: 60 | Power: 55 | Run: 50 | Arm: 55 | Field: 50 | Overall: 55

The Nationals selected Kieboom with the first of their back-to-back picks in the first round in 2016, four years after the organization had drafted his elder brother, Spencer, a catcher, in the fifth round. Regarded by scouts as one of the better prep hitters in his class, Carter, who signed for below slot at $2 million, has steadily built upon that reputation as a pro. After being limited by a hamstring injury in what was still a productive first full season, a healthy Kieboom broke out in 2018, earning a midseason promotion to Double-A at age 20 as well as an All-Star Futures Game selection after a torrid first half in the Carolina League. He took home the Nationals Minor League Player of the Year award after ranking among the organization's Minor League leaders with 48 extra-base hits (tied for first), 16 home runs (third) and 69 RBIs (second).

Kieboom impresses scouts with plus bat speed and loose wrists as part of a balanced right-handed swing. He's comfortable hitting to all fields, with plus raw power to his pull side that should play more from line to line as he gets stronger. He did a better job in 2018 of striking balance in his approach and consistently put together strong at-bats. While not a basestealing threat, Kieboom does have average speed, which plays up thanks to his quick feet and excellent instincts.

Kieboom has worked hard to improve his defense as a pro and projects to be at least average, with the necessary range, hands and arm strength to profile elsewhere on the infield if forced off shortstop. A move to second base, where he saw reps during the Arizona Fall League, is a possibility.


2018

Scouting grades: Hit: 55 | Power: 50 | Run: 50 | Arm: 55 | Field: 50 | Overall: 55

The Nationals' relationship with the Kieboom family dates back to 2012, when the club selected Spencer, a catcher, in the fifth round of the Draft. Spencer made his big league debut late in '16, the same year Washington took Carter, the youngest of three baseball-playing brothers, with its first of back-to-back picks late in the first round. Regarded by scouts as one of the best prep hitters in his class, Carter signed for below slot at $2 million and then flashed his offensive potential in the Rookie-level Gulf Coast League. Assigned to Class A Hagerstown for his first full season, Kieboom got off to a torrid start by hitting for average and power in the South Atlantic League, only to suffer a hamstring injury and land on the disabled list roughly a month into his campaign. Fully healthy in 2018, Kieboom torched Carolina League pitching during the first half of the season and had already reached Double-A at age 20 by the time he suited up for the U.S. in the SiriusXM All-Star Futures Game in July. 

Kieboom has a knack for barreling the baseball, a product of his plus bat speed, hand-eye coordination and mature approach. He was aggressive to a fault at times and showed some swing-and-miss tendencies during his pro debut, though his approach appeared more refined in 2017, leading scouts to project him as a future above-average hitter. Kieboom gets good loft to his right-handed swing, too, so much so that he should have at least average power once he fills out physically. 

Kieboom's average speed plays up thanks to his quick feet and excellent instincts. Those tools, along with his solid range and above-average arm strength, give him a chance to stick at shortstop, although some believe he'll eventually end up at third base. Regardless of his ultimate defensive home, it will be Kieboom's bat that gets him to the big leagues.


2017

Scouting grades: Hit: 55 | Power: 50 | Run: 50 | Arm: 55 | Field: 50 | Overall: 55

It goes without saying that the Kieboom family has deep baseball roots, particularly in the Nationals' system. The club selected Spencer, a catcher, in the fifth round of the 2012 Draft, and he made his big league debut late in '16, the same the year the Nationals took Carter, the youngest of three baseball-playing brothers, with their first of back-to-back picks late in the first round. Regarded by scouts as one of the best prep hitters in his class, Carter signed for below slot at $2 million and then flashed his offensive potential in the Rookie-level Gulf Coast League. Assigned to Class A Hagerstown for his first full season, Kieboom got off to a torrid start in the South Atlantic League, only to suffer a hamstring injury and land on the disabled list roughly a month into his campaign. 

Kieboom has a knack for barreling the baseball, a product of his plus bat speed, hand-eye coordination and mature approach. He was aggressive to a fault at times and showed some swing-and-miss tendencies during his pro debut, but it hasn't deterred scouts from projecting him as an above-average hitter. Kieboom has good loft in his right-handed swing, and he should have at least average power once he fills out. 

Kieboom's speed is only average but plays up thanks to his quick feet and excellent instincts. Those tools, along with his solid range and above-average arm strength, give him a chance to stick at shortstop, although some believe he'll eventually end up at third base. Regardless of his ultimate defensive home, it will be up to Kieboom's bat to carry him to the big leagues.


2016

Scouting grades: Hit: 55 | Power: 50 | Run: 45 | Arm: 55 | Field: 50 | Overall: 50

The youngest of three baseball-playing brothers, Carter is the best hitter in the family -- and was regarded by scouts as one of the best prep hitters in the 2016 Draft. Already familiar with the Kieboom bloodlines after selecting oldest brother Spencer, a catcher, in the fifth round of the 2012 Draft, the Nationals tapped into the family gene pool once again in 2016 when they selected Carter with their first of back-to-back picks late in the first round. After signing for below-slot at $2 million, he began his pro career in the Rookie Gulf Coast League.

Thanks to excellent hand-eye coordination and a mature approach, Kieboom barrels balls repeatedly. He had the best at-bats of anyone at the Under Armour All-America Game in July, including an opposite-field single against a 98-mph fastball from Riley Pint, whom the Rockies selected with the No. 4 overall pick. Factor in Kieboom's quality bat speed and the loft in his right-handed swing, and he should have at least average power once he fills out.

Kieboom has the actions, soft hands and solid arm strength to continue playing shortstop in pro ball, though some scouts believe he'll eventually end up at third base, or possibly even behind the plate. He's also capable of switch-pitching, not that the mound will be part of his future at the next level. Had he not signed with the Natioanls, Kieboom was set to follow in Spencer's footstep at Clemson.



Statcast - Batting

Season Pitches Batted Balls Barrels Barrel % Exit Velocity Launch Angle Sweet Spot % XBA XSLG WOBA XWOBA XWOBACON Hard Hit % K % BB %
2019 168 23 2 8.7 90.9 12.4 43.5 .213 .392 .204 .279 .419 43.5 37.2 9.3
ALL 168 23 2 8.7 90.9 12.4 43.5 .213 .392 .204 .279 .419 43.5 37.2 9.3
MLB 40553 6.3 87.5 11.2 33.1 .251 .412 .317 .318 .371 34.5 21.7 8.3

Transactions

Team Date Transaction
10/31/2019 Washington Nationals activated SS Carter Kieboom.
10/01/2019 Washington Nationals reassigned SS Carter Kieboom to the minor leagues.
09/30/2019 Washington Nationals recalled SS Carter Kieboom from Fresno Grizzlies.
05/07/2019 Washington Nationals optioned SS Carter Kieboom to Fresno Grizzlies.
04/26/2019 Washington Nationals selected the contract of Carter Kieboom from Fresno Grizzlies.
04/02/2019 SS Carter Kieboom assigned to Fresno Grizzlies from Harrisburg Senators.
02/12/2019 Washington Nationals invited non-roster SS Carter Kieboom to spring training.
06/21/2018 SS Carter Kieboom assigned to Harrisburg Senators from Potomac Nationals.
04/04/2018 SS Carter Kieboom assigned to Potomac Nationals from Hagerstown Suns.
03/02/2018 IF Carter Kieboom assigned to Washington Nationals.
08/15/2017 SS Carter Kieboom assigned to Hagerstown Suns from Auburn Doubledays.
08/06/2017 Hagerstown Suns sent SS Carter Kieboom on a rehab assignment to Auburn Doubledays.
07/28/2017 Hagerstown Suns sent 2B Carter Kieboom on a rehab assignment to GCL Nationals.
05/13/2017 Hagerstown Suns placed SS Carter Kieboom on the 7-day disabled list.
04/04/2017 SS Carter Kieboom assigned to Hagerstown Suns from GCL Nationals.
06/24/2016 SS Carter Kieboom assigned to GCL Nationals.
06/16/2016 Washington Nationals signed SS Carter Kieboom.