Justus Kane Sheffield…resides in Tullahoma, TN… went 10-0 with a 0.43 ERA (3 ER, 61.2 IP) and 131 strikeouts in his senior season at Tullahoma (TN) High School, where he had his number 42 retired on January 21, 2020…named the 2014 “Gatorade National Player of the Year”…was a Perfect Game USA First Team All-American and First Team All-State selection by the Tennessee Baseball Coaches Association...has an older brother, Jordan, who currently pitches in the Colorado Rockies organization.
Went 4-3 with a 3.58 ERA (22 ER, 55.1 IP) with 48 strikeouts and 20 walks in 10 starts...Led American League rookies with 6 quality starts...among AL rookies, also ranked T2nd in starts (10), 3rd in innings pitched (55.1), 6th in strikeouts (48) and T7th in wins (4)...Posted a 1.6 fWAR, 2nd-best among all rookie pitchers in 2020, trailing only the Dodgers Tony Gonsolin (1.8)...Kyle Lewis (1.7) was the only American League rookie (position player or pitcher) to post a higher fWAR than Sheffield...Went 2-0 with a 2.16 ERA (6 ER, 25.0 IP) with 19 strikeouts and eight walks in four starts in the month of September…his 2.16 ERA was tied for 10th-best in the Major Leagues (also: Joe Musgrove-PIT)/4th-best in the AL in September…his 2.16 ERA was 2nd-best by a Mariners rookie in the month of September in club history, behind only Rich DeLucia in 1990 (2.00/8 ER, 36.0 IP)...From Aug. 9 through the end of the season, worked at least 6.0 innings while allowing two or fewer runs in six of eight starts over this span…during this stretch, went 4-1 with a 2.64 ERA (14 ER, 47.2 IP)...Allowed only one extra-base hit to a left-handed batter (Charlie Blackmon, 2B, 8/9 vs. COL)…limited lefties to a .154 (8x52) BAA while striking out 14 and walking four...Earned his 1st Major League win on Aug. 9 vs. Colorado…worked 6.0 scoreless innings, allowing only four hits while striking out seven.
Went 0-1 with a 5.50 ERA (22 ER, 36.0 IP) with 18 walks and 37 strikeouts in 8 games (7 starts) with the Mariners...Left the game with the lead or tied in 5 of his 7 starts but did not receive a win...overall, the Mariners went 6-2 in his 8 appearances...Began the month of September by striking out 7 over 5.0 scoreless innings at Chicago-NL on September 2 and tossing 6.0 innings of 1-run ball on September 10 vs. Cincinnati...Worked at least 5.0 innings and allowed 1 run or fewer in 3 of his 7 starts...Appeared in 2 stints with the Mariners: April 26-27 and August 23 - end of season…optioned to Triple-A Tacoma to begin the season…transferred to Double-A Arkansas on June 14…recalled by Seattle from Arkansas on August 23...In 12 starts with Double-A Arkansas, went 5-3 with a 2.19 ERA (19 ER, 78.0 IP) with 85 strikeouts and 18 walks…had 9 starts of at least 6.0 innings and 2 or fewer earned runs allowed…worked at least 6.0 innings in 10 of his 12 starts, including 6 outings of at least 7.0 innings…allowed 3 or fewer earned runs in 11 of 12 starts…issued 2 or fewer walks in 11 of 12 starts…recorded at least 7 strikeouts in 7 of 12 starts…tossed a career-high 8.0 innings on June 29 vs. Tulsa, while allowing just 1 run and striking out 8...In 13 games (12 starts) with Triple-A Tacoma, was 2-6 with a 6.87 ERA (42 ER, 55.0 IP) with 48 strikeouts and 41 walks.
The Totals - Made 3 relief appearances with the Yankees, allowing 3 runs in 2.2 innings of work (10.13 ERA)…all 3 runs scored via 1 home run…walked 3...Ranking - Following the season, named the No. 1 prospect in the Mariners organization by Baseball America and MLB.com…overall, ranks No. 43 by MLB.com, No. 27 by Baseball America...Debut - Made his Major League debut with the Yankees on Sept. 19 vs. Boston, tossing a scoreless 9th inning…made his debut at 22 years, 129 days of age…selected from Triple-A Scranton/Wilkes-Barre on Sept. 18...Youth Movement - Was the 6th-youngest player in the American League in 2018, including the 2nd-youngest pitcher...Minor Details - Began the year with Double-A Trenton, going 1-2 with a 2.25 ERA (7 ER, 28.0 IP) with 39 strikeouts and 14 walks in 5 starts…promoted to Triple-A Scranton/ Wilkes-Barre on May 4, where he went 6-4 with a 2.56 ERA (25 ER, 88.0 IP) with 84 strikeouts and 36 walks in 20 games (15 starts)…made 3 postseason relief appearances with Scranton/W-B, going 1-0 with a 3.60 ERA (2 ER, 5.0 IP) with 5 strikeouts...Bright Future - Named to the U.S. Team for the All-Star Futures Game…tossed 1.1 innings, allowing 2 runs on 2 hits (1 home run) while striking out 1...Honors - Selected by Baseball America to the 2018 Minor League All-Star Team.
Spent nearly the entire season with Double-A Trenton, logging a 7-6 record with one complete game and a 3.18 ERA (93.1IP, 94H, 43R/33ER, 33BB, 82K, 14HR) in 17 starts…was named to the Eastern League Mid-Season All-Star Team…at 20 years and 11 months, was the fourth-youngest player to make a 2017 Opening Day roster in the Eastern League…yielded one-or-zero earned runs in 9-of-17 turns…held opponents to a .258 BA (94-for-365); LH .217 (25-for-115); RH .276 (69-for-250)…was named Eastern League "Pitcher of the Week" for 5/22-28 after winning both starts and posting a 0.69 ERA (13.0IP, 7H, 2R/1ER, 3BB, 10K, 1HR)…tossed his ﬁrst career complete game and shutout in 6/18-G1 win vs. Erie, permitting just 3H over 7.0IP (1BB, 3K, 1HP)…started two games in the Eastern League playoﬀs, tossing 4.0 hitless, scoreless innings (2BB, 3K, 1HP) in Game 1 of the EL Semiﬁnals vs. Binghamton and taking the loss in Game 2 of the EL Championship Series vs. Altoona (4.1IP, 4H, 2ER, 1BB, 6K)…also made two starts with the GCL Yankees West, going 0-1 with a 1.93 ERA (4.2IP, 4H, 1ER, 1BB, 6K)…following the season, pitched for Scottsdale in the Arizona Fall League, where he went 2-2 with a 3.10 ERA (20.1IP, 14H, 8R/7ER, 3BB, 22K) in ﬁve starts, ranked second in the league in WHIP (0.84) and earned a spot on the AFL All-Prospect Team…following the season, was labeled by Baseball America as the No. 3 prospect in the Yankees organization and No. 41 prospect in baseball.
Combined with Single-A Lynchburg, Single-A Tampa and Double-A Trenton to go 10-6 with a 3.09 ERA (125.1IP, 107H, 47R/43ER, 53B, 129K) in 25 starts…held opponents to a .230 (107-for-466) BA and a .200 (23-for-115) BA with runners in scoring position…allowed 3ER-or-fewer in 22 of his 25 starts…started the season with Lynchburg and went 7-5 with a 3.59 ERA (95.1IP, 91H, 40R/38ER, 40BB, 93K) in 19 starts…was named a Carolina League Mid-Season All-Star…was acquired by the Yankees from the Indians on 7/31/16...was transferred to Tampa where he made five starts, going 3-1 with a 1.73 ERA (26.0IP, 14H, 6R/5ER, 10BB, 27K)…recorded a career-high 11K in his Tampa debut on 8/5 vs. Daytona, allowing only 1ER in 6.0IP (2H, 1BB)…was promoted to Trenton on 9/2 and made one start, allowing an unearned run over 4.0IP (2H, 3BB, 9K)…following the season, was named the N0.7 prospect in the Yankees organization by Baseball America.
Spent the season with Single-A Lake County, going 9-4 with a 3.31 ERA (127.2IP, 135H, 60R/47ER, 38BB, 138K) in 26 starts…ranked second in the Midwest League in strikeouts…his 9.73 K/9.0IP ratio led Midwest League starters…was a Midwest League Mid-Season All-Star…went 3-3 with a 2.03 ERA (66.2IP, 15ER) over his ﬁnal 13 starts…following the season, was tabbed an Organization All-Star by MiLB.com and labeled the No. 4 prospect in the Indians organization by Baseball America.
Made his professional debut with the AZL Indians, going 3-1 with a 4.79 ERA (20.2IP, 24H, 16R/11ER, 9BB, 29K) in eight games (four starts)…recorded 10K over 4.0 scoreless innings (1H, 1BB) on 8/16 at the AZL Padres…following the season, was named Cleveland's No. 4 prospect by Baseball America.