PHOENIX — The Arizona Diamondbacks added INF Wyatt Mathisen (@wmathisen_4), RHP Riley Smith (@rileywade2013), RHP Taylor Widener and INF Andy Young (@AndyJYoung15) to the 40-man roster. The D-backs’ 40-man roster is at 39.

Added to the 40-man roster

• INF Wyatt Mathisen (25) – Hit .283 (80-for-283)/.403 OBP/.601 SLG with 19 doubles, 23 home runs and 61 RBI in 87 games with Triple-A Reno in 2019…played 59 games at third base with the Aces, 20 at second, 9 at first, 3 at pitcher and 1 in right field…signed by the D-backs as a Minor League free agent on November 12, 2018 and was a non-roster invitee to Spring Training…in 8 Minor League seasons in the Pirates’ (2012-18) and D-backs’ (2019) organizations, has batted .272 (584-for-2,148) with 107 doubles, 47 home runs and 267 RBI in 649 games…was selected by Pittsburgh in the second round of the 2012 draft out of Calallen High School in Corpus Christi, Texas.
• RHP Riley Smith (24) – In 25 starts with Double-A Jackson and Triple-A Reno this season, went 6-6 with a 4.43 ERA (66 ER in 134.0 IP), 1 complete game and 110 strikeouts…was named to the 2019 Southern League midseason All-Star Team and posted a 2.27 ERA (18 ER in 71.1 IP) in 13 starts with the Generals…has gone 23-16 with 2 saves, a 3.64 ERA (171 ER in 423.1 IP), 1 complete game and 372 strikeouts in 98 games (66 starts) over 4 Minor League seasons in the D-backs’ system (2016-19)…selected by Arizona in the 24th round of the 2016 draft out of Louisiana State University.
• RHP Taylor Widener (25) – Is rated as Arizona’s No. 13 prospect by MLB.com…at Triple-A Reno in 2019, made 23 starts and was 6-7 with an 8.10 ERA (90 ER in 100.0 IP) and 109 strikeouts…entered the season possessing the Best Fastball in the D-backs’ organization, according to Baseball America_…named the D-backs’ 2018 organizational Minor League Pitcher of the Year, Southern League Pitcher of the Year and _Baseball America’s Double-A Pitcher of the Year after posting a 2.75 ERA (42 ER in 137.1 IP) and 176 strikeouts, second-most in the Minors…acquired from the Yankees in a 3-team trade with the Rays on February 20, 2018…has gone 21-23 with 4 saves, a 4.08 ERA (179 ER in 395.0 IP) and 473 strikeouts in 4 Minor League seasons in the Yankees’ (2016-17) and D-backs’ (2018-19) systems…was New York’s 12th-round selection in the 2016 draft out of the University of South Carolina.
• INF Andy Young (25) – Is rated as Arizona’s No. 23 prospect by MLB.com…combined to hit .271 (125-for-462)/.368 OBP/.535 SLG with 25 doubles, 5 triples, 29 home runs and 81 RBI in 133 games with Double-A Jackson and Triple-A Reno this season…in 68 games with the Aces, boasted a .984 OPS with 21 home runs and 53 RBI, and ranked among Pacific Coast League leaders in home runs (T-4th) and slugging (9th, .611) after his promotion to the Aces on June 16…totaled 69 games at second base in 2019, 33 in shortstop and 29 at third…was a non-roster invitee to Spring Training in 2019…acquired from the Cardinals with RHP Luke Weaver, C Carson Kelly and a competitive balance draft pick (OF Dominic Fletcher) for INF Paul Goldschmidt on December 5, 2018… named to 3 All-Star Teams: 2018 Florida State League (mid- and postseason) and 2017 Midwest League (midseason)…is a career .278 (416-for-1,496) Minor League hitter with 63 doubles, 18 triples, 70 home runs and 222 RBI in 422 games in the Cardinals’ (2016-18) and D-backs’ (2019) organizations…was selected by St. Louis in the 37th round of the 2016 draft out of Indiana State University.