Nathan Karns

Nathan Karns #13

  • P
  • B/T: R/R
  • 6' 3"/225
  • Age: 28


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Pitches: Strikes, Balls


Last 5 years - - - - - -

Nathan Karns Stats

7-5 3.67 147.0 145 1.28

Nathan Karns MLB Career Stats

8-7 4.00 171.0 169 1.30

Nathan Karns Bio

  • Full Name: Nathan Alan Karns
  • Born: 11/25/1987 in Franklin, PA
  • Draft: 2009, Washington Nationals, 12th rd. (352nd overall)
  • College: Texas Tech
  • Debut: May 28, 2013
View More Bio Info +
2015 Stats 7 5 3.67 27 26 0 147.0 145 1.28
MLB Career Stats 8 7 4.00 32 31 0 171.0 169 1.30

Nathan Karns Four-seam FB Statcast Averages

Year Team LG NP Pitch Type Avg Pitch Speed (mph) Avg Perceived Speed (mph) Avg Spin Rate (rpm) Avg Extension (feet) Avg Exit Velocity (mph)
2015 Mariners AL 1380 Four-seam FB 92.25 92.98 2361.00 6.81 90.50
MLB Avg - - - Four-seam FB 92.90 92.54 2213.00 6.16 89.87


Note: Opponent can be found on current team or on team when both players met.

Nathan Karns Stats

Nathan Karns Advanced Stats

Nathan Karns Statcast Events


Nathan Karns News

Nathan Karns Fantasy News

November 6, 2015 at 5:33 AM ET

Rays, Mariners complete six-player trade

On Thursday, Seattle acquired right-handed starter Nathan Karns, reliever C.J. Riefenhauser and well-regarded Minor League outfielder Boog Powell for first baseman Logan Morrison, utility man Brad Miller and reliever Danny Farquhar.

October 8, 2015 at 1:11 AM ET

Karns fans 145 in ‘15

Rays right-hander Nate Karns finished the 2015 regular season with a 7-5 record, a 3.67 ERA, a 1.28 WHIP and 145 strikeouts across 147 innings.


Nathan Karns Awards Organization All-Star

Year Team League
2012 Washington NL

EAS Pitcher of the Week

Week Team League
04/22/2013 Harrisburg EAS

CAR Pitcher of the Week

Week Team League
06/18/2012 Potomac CAR
07/23/2012 Potomac CAR

Nathan Karns Leaderboards

Bases on Balls

Season BB Rank
2015 56 18th in AL

Nathan Karns Latest Transactions

Team Date Transaction
November 5, 2015 Seattle Mariners traded SS Brad Miller, 1B Logan Morrison and RHP Danny Farquhar to Tampa Bay Rays for RHP Nathan Karns, LHP C.J. Riefenhauser and CF Boog Powell.
September 12, 2014 Tampa Bay Rays recalled RHP Nathan Karns from Durham Bulls.
May 6, 2014 Tampa Bay Rays optioned RHP Nate Karns to Durham Bulls.
May 4, 2014 Tampa Bay Rays recalled Nate Karns from Durham Bulls.
March 13, 2014 Tampa Bay Rays optioned RHP Nate Karns to Durham Bulls.
February 13, 2014 Tampa Bay Rays traded C Jose Lobaton, LHP Felipe Rivero and RF Drew Vettleson to Washington Nationals for RHP Nathan Karns.
September 30, 2013 Washington Nationals recalled Nathan Karns from Harrisburg Senators.
June 12, 2013 Washington Nationals optioned Nathan Karns to Harrisburg Senators.
May 28, 2013 Washington Nationals recalled Nathan Karns from Harrisburg Senators.
March 14, 2013 Washington Nationals optioned Nathan Karns to Harrisburg Senators.
November 20, 2012 Washington Nationals selected the contract of Nathan Karns from Potomac Nationals.
September 4, 2012 Nathan Karns roster status changed by Potomac Nationals.
August 21, 2012 Potomac Nationals placed RHP Nathan Karns on the 7-day disabled list.
June 5, 2012 RHP Nathan Karns assigned to Potomac Nationals from Hagerstown Suns.
April 4, 2012 Nathan Karns assigned to Hagerstown Suns from Auburn Doubledays.
July 14, 2011 Nathan Karns assigned to Auburn Doubledays from GCL Nationals.
September 6, 2010 Nathan Karns roster status changed by GCL Nationals.
July 8, 2010 GCL Nationals placed RHP Nathan Karns on the 60-day disabled list. Right shoulder surgery
August 18, 2009 RHP Nathan Karns assigned to GCL Nationals from Washington Nationals.
August 17, 2009 Washington Nationals signed RHP Nathan Karns.

Nathan Alan Karns Bio Info

Nathan an alum of Texas Tech University....majored in 2 seasons with the Red Raiders, went 7-11 with a 6.90 ERA, but struck out 105 in 104.1 collegiate innings...began collegiate playing career at North Carolina State, going 3-2 with a 2.67 ERA in 9 games/8 starts as a freshman...originally signed out of high school with the University of Texas...graduated from and played baseball and football for James Martin (Tx) High in Arlington...on the diamond, was named first team All-District twice (2005 and '06) Summer of 2005, helped pitch Midland Redskins to a semifinal berth in the Connie Mack World Series...was selected in the 10th round of the 2006 First-Year Player Draft by the Astros, but did not sign.


Acquired from Washington on Feb 13 and spent most of the season with Triple-A Durham before making 2 starts for the Rays in September...Made his Rays debut Sep 12 at TOR and earned his first career victory, 1-0 over J.A. Happ...totaled 7 IP, 2 H, 0 R, 2 BB, 8 SO, becoming the first in franchise history to go 7-plus IP and allow 2 H or fewer in his Rays debut...tied Steve Trachsel (April 3, 2000 at MIN) for the longest scoreless outing in a Rays debut...his 114 pitches were most ever in a Rays debut...Made his second start Sep 21 vs. CWS and allowed 3 HR...has allowed 8 HR in 24 career innings in the majors...After RH Heath Bell was designated for assignment, was recalled for a two-day stint with the Rays from May 3-4 but did not pitch...Made a career-high 30 starts between Durham (regular and postseason) and the those 30 starts, allowed 1 ER or fewer 13 times, and allowed 5 ER or more 10 times...Led all Rays minor leaguers with 153 SO and tied Rochester's Alex Meyer (Twins) for most among Triple-A pitchers...ranked 2nd in the International League with 9.47 SO/9 IP, tied for 2nd with 27 starts and 3rd with 62 BB...On Aug 15 vs. Charlotte (White Sox), threw 6 hitless innings with 10 strikeouts before the Durham bullpen lost the no-hit bid in the 9th...despite a no-decision Sep 6 vs. Columbus (Indians), helped Durham clinch a trip to the Governors' Cup finals (7-IP, 1-ER, 12-SO) with a 4-2 win...his 12 SO tied Jeremy Hellickson's Bulls Triple-A postseason record (Sep 9, 2009 vs. Louisville)...His ERA by month for Durham: April 8.20 (26.1-IP, 24-ER)...May 1.39 (32.1-IP, 5-ER)...June 10.55 (21.1-IP, 25-ER)...July 1.62 (33.1-IP, 6-ER)...August 6.19 (32-IP, 22-ER)...named the club's Minor League Pitcher of the Month for May and July...Enters 2015 rated by Baseball America as the No. 7 prospect in the Rays system and the No. 2 pitching prospect behind Alex Colome...the publication also recognized Karns for Best Curveball in the organization.


Spent the majority of the season with Double-A Harrisburg (Nationals)…reached the majors and made 3 starts for the Nationals after a late-May call-up, going 0-1 with a 7.50 ERA (12-IP, 10-ER)…allowed 5 HR (3 solo shots)... His major league debut was May 28 vs. BAL…opposing starter was Kevin Gausman, making his second career major league start…allowed 3 runs in 4.1 IP and the Nationals won 9-3... Went 10-6 with a 3.26 ERA (132.2-IP, 48-ER) and 155 strikeouts in 23 starts for Harrisburg…ranked among Nationals minor league leaders in wins (10, tied for 4th), strikeouts (155, 2nd) and ERA (3.26, 4th)... Ranked among Eastern League leaders in ERA(tied for 1st), WHIP (1.18, 3rd), opp avg. (.224, 2nd) and complete games (3, 1st)…ranked 2nd in the league with 155 SO, behind Twins prospect Trevor May (159)... Ranked by's Keith Law as the No. 4 prospect in the Nationals system following the season…Baseball America tabbed him as the organization's No. 9 prospect.

2012 Was named Nationals Minor League Pitcher of the Year after going 11-4 with an organizational-best 2.17 ERA in 24 games/18 starts for Potomac of the Single-A Carolina League and Hagerstown of the Single-A South Atlantic League...led the Nationals' system with 148 strikeouts, while the 11 wins tied for 9 starts from June 15-August 2, went 8-0 with an 0.94 ERA...fanned 65 strikeouts and issued just 14 walks in those 9 starts...twice was named Carolina League Pitcher of the Week (June 11-17, July 16-22). 2011 Began season in the Nationals Extended Spring Training program in Viera, FL...took the mound for the first time on June 20 pitching for the Nationals' Rookie-level Gulf Coast League entry...combined to go 3-2 with a 2.28 ERA in 13 starts for Auburn of the Short-season Single-A New York Penn League and the GCL Nationals...spun 18.2 scoreless innings of 2-hit ball during 5 starts in the GCL...made Auburn debut on July 19...allowed one run or less in 5 of 8 starts in the NY-P League...allowed only one home run in 55.1 innings on the season. 2010 Did not pitch while rehabbing from right shoulder SLAP repair surgery performed by Dr. Wiemi Douoguih at the Washington Hospital Center on July 8.