Grew up in Gibbsboro, N.J.,10 miles east of Citizens Bank Park....Despite growing up a St. Louis Cardinals fan, Gallen wanted to miss his first day ever of school to attend Philadelphia's World Series Parade on Friday, Oct. 31, 2008, but his mom said no because "he wasn't a Phillies fan...Wore No. 25 in honor of Mark McGwire until he was 11 years old...Is a 2013 graduate of Bishop Eustace Prep School in Pennsauken Township, N.J.…was teammates with the Twins' Devin Smeltzer...Played three seasons at the University of North Carolina (2014- 16), including two years (2015-16) with D-backs prospect J.B. Bukauskas...Lived with Bukauskas in 2016 at Chapel Hill and roomed together once again in Spring Training in 2019 (Florida) and 2020 (Arizona).
Was 4-10 with a 4.30 ERA (58 ER in 121.1 IP) and 139 strikeouts... Missed the start of the season due to a right forearm hairline stress fracture of radial head and was reinstated from the 10-day injured list on April 13… was also on the injured list from May 9-June 16 (sprained right elbow) and July 3-16 (strained right hamstring)... Averaged 93.0 MPH on fastballs, up from 90.8 in 2020 [includes 4-seamers, cutters and sinkers]…his 2.2 MPH increase tied for seventh most in MLB.
Named the D-backs' Most Valuable Pitcher by the Arizona Chapter of the BBWAA after going 3-2 with a 2.75 ERA (22 ER in 72.0 IP), 82 strikeouts, .210 opponent average and 1.11 WHIP in 12 starts...Tied for ninth in NL Cy Young voting (2 5th place votes)...ERA would have been 1.77 minus 2 consecutive innings (4 runs in the sixth inning on Sept. 7 @ Giants [no outs recorded] and 4 runs in the first inning on Sept. 12 vs. Mariners)...Ranked among NL leaders in quality starts (T-2nd, 9), ERA (6th), opponent average (6th), hits per 9.0 IP (6.88), innings (7th), strikeouts per 9.0 IP (9th, 10.25), strikeouts (10th) and WHIP (10th, 1.11)...Opponents hit .098 (4-for-41) off his curveball (.203 in 2019).
Went 3-6 with a 2.81 ERA (25 ER in 80.0 IP), .212 opponent average, 96 strikeouts and 36 walks in 15 starts between the Marlins and D-backs in his fi rst Major League season...Acquired from the Marlins on July 31 for INF Jazz Chisholm…went 2-3 with a 2.89 ERA (14 ER in 43.2 IP), .228 opponent average and 53 strikeouts in 8 starts for Arizona...Began the season with Triple-A New Orleans and went 9-1 with a 1.77 ERA (18 ER in 91.1 IP) in 14 starts…named Pacifi c Coast League Pitcher of the Week on 3 occasions...Led the Minors in strikeouts (112) at the time of his promotion and was tied for fi rst in wins with Arturo Reyes (Rays)...Threw 6.1 no-hit innings to begin his start on Sept. 4 vs. Padres, the most in team history by a rookie, surpassing the previous mark of 6.0 done by Alex Young on July 7, 2019 vs. Rockies and Edgar Gonzalez on Aug. 29, 2004 @ Reds [source: Sportradar].
Went 8-9, with a 3.65 ERA (133.1 ip/54 er) and 136 strikeouts in 25 starts with Triple-A New Orleans..Pitched a season-high 7.0 shutout innings on April 21 vs. Oklahoma City. Allowed four hits and three walks, while striking out five. Also tossed 7.0 shutout innings on May 3 vs. Round Rock...Tossed eight scoreless outings, with six lasting 6.0 innings or longer (5.0, June 22 at Memphis; 5.2, July 28 vs. Tacoma)...Won three straight starts from July 16-28, allowing just one earned run and striking out 18 over 17.2 innings...Tied career-high nine strikeouts on May 9 at Round Rock, and again on August 31 vs. Omaha...Named a Pacific Coast League Midseason All-Star, going 4-5, 4.24 (85.0/40) with 83 strikeouts in 16 starts prior to the break...Held opponents to two-or-fewer runs in 13 of 25 starts...Finished the season ranked second in PCL in strikeouts and ERA..Struck out 9.18 batters per 9.0 innings, third-highest rate in PCL.
Combined for a 10-8 record with a 2.93 ERA (147.2 ip/48 er) over 26 starts between Single-A Palm Beach, Double-A Springfield and Triple-A Memphis...Totaled 121 strikeouts and 35 walks in 147.2 innings, finishing with 3.5 strikeout/walk ratio...Ranked sixth among qualifying St. Louis farmhands in ERA...In nine total starts for Single-A Palm Beach, posted 5-2 record with 1.62 ERA (55.2/10) and 56 strikeouts... Finished season tied for fourth on Palm Beach staff in wins, while ranking seventh in strikeouts. Held opponents to a .215 average against...Recorded career-high nine strikeouts over 5.1 innings in season debut, April 7 at St. Lucie. Equaled total on May 10 at Ft. Myers... Tossed first professional complete game in second start, an April 13 loss at Clearwater. Allowed just one run and seven hits without walking a batter over 6.0 innings...Pitched a career-high 8.2 innings on May 30th against Lakeland. Also went 8.0 innings in May 17 win over Jupiter...Named Florida State League Midseason All-Star prior to promotion to Double-A Springfield on June 3. At time of promotion, ranked second in FSL in ERA and WHIP (0.97), tied for third in wins, fourth in average against and ninth in strikeouts...Made first career Double-A start in June 6 win at NW Arkansas. Allowed one run on four hits with three walks and four strikeouts...Promoted to Triple-A Memphis on June 26 and made three starts with Redbirds before being sent back to Springfield on July 10...In first start with Memphis, took loss after surrendering three runs and six hits while walking none and striking out eight over 5.0 innings on June 26 vs. Oklahoma City...Named Texas League Pitcher of the Week (July 10-16) after recording six strikeouts over 7.0 shutout innings on July 16 vs. NW Arkansas...Won three straight starts from July 16-26, allowing five earned runs over 19.0 innings... Combined for 4-1 record with 24 strikeouts in six July starts between Springfield and Memphis...Recorded at-least one strikeout in all 26 starts...Went 6.0 innings or more in 14 of 26 starts across all levels.