In 2010 graduated from Germantown Friends High School in Philadelphia, where as a senior he went 9-2 with a 1.04 ERA...committed to pitch to the University of Oregon before he was drafted in the first round by the Phillies with the 27th overall pick.
Beginning 8/29 finished the season on the 10-day injured list with a left shoulder impingement...Began the season at the alternate training site as part of the Reds' 60-player pool...was promoted on 8/25, when RHP Anthony DeSclafani went on the 3-day paternity list...In his only appearance of the season, in the opener of the doubleheader on 8/27 at Mil bridged the sixth and seventh innings to help preserve the Reds' 6-1 lead in their 6-1 win (0.2ip, 1h, 0r, 1bb, 1k, 20pch)...Two days later went on the 10-day IL in the middle of the doubleheader vs the Cubs...During spring training made 1 relief appearance for the Reds (1ip, 1h, 1hbp)...wore uniform number 80...While on the injured list traveled to the Wild Card Series at Atl as part of the Reds' 40-player Postseason pool...On 10/14 cleared waivers and was outrighted to Louisville...on 10/18 elected free agency...on 12/11 was re-signed to a minor league contract with an invitation to 2021 Major League spring training camp.
Made 30 relief apps for the Braves, Mariners and Rangers.... Was on the Braves' Opening Day roster and posted a 3.18 ERA in 14 apps before he went on the 10-day injured list on 4/27 with a right groin strain.... Was reinstated from the injured list on 5/14 and made his final appearance for the Braves in that day's 14-3 loss vs StL... On 5/20 was traded to the Mariners, along with RHP Arodys Vizcaíno, for RHP Anthony Swarzak... On 6/28, after 11 apps for the Mariners (5/22-6/22), was claimed off waivers by the Rangers and finished the season on their roster.... Made 4 apps for the Rangers, his last on 7/14 vs Hou, before he was disabled with left shoulder fatigue...did not pitch again the rest of the season.... Following the season refused an outright assignment and became a free agent.... On 1/17/20 was signed by the Reds to a minor league contract with an invitation to Major League spring training camp.
Spent the majority of the season in Atlanta after he made his MLB debut on 4/21 vs. NYM…Appeared in 60 games out of the bullpen for Braves, going 6-1 with a save and a 3.11 ERA (22 ER/63.2 IP) ... Pitched more than 1.0 inning in 14 outings, compiling a 0.95 ERA (3 ER/28.1 IP) with 43 strikeouts...Three of his six wins this season came in outings longer than 1.0 inning ... Fanned eight batters in 3.0 innings of relief, 6/2 vs. WSH, to become the first Braves reliever in 110 seasons to strike out at least eight batters in that few innings ... Milwaukee's Josh Hader struck out eight batters to earn a 2.2-inning save on 4/30/18 at CIN…Prior to that, the last reliever to strike out eight or more batters in 3.0 innings or less of work was the Yankee's Ron Davis on 5/4/81…Davis got nine outs, eight by strikeout ... Since the franchise moved to Atlanta in 1966, only one other reliever struck out eight batters in a game...Rick Kester fanned eight Houston Astros over 5.2 innings on 9/13/70 at the Astrodome ... Threw 50 pitches, 33 for strikes during his outing...Michael A. Taylor flew out to right field to lead off the 12th inning for the lone non-strikeout out ... Compiled a 2.32 ERA (14 ER/54.1 IP) over 48 games through the end of the August…Allowed 10 runs, eight earned, over 9.1 innings in 12 September games ... Limited right-handed hitters to a .194 average (26-for-134) and a .586 OPS…Lefties hit .253 (24-for-95) and compiled a .751 OPS ... Struck out 67, two behind teammate A.J. Minter for the most by a rookie left-handed reliever in the National League…Since the franchise moved to Atlanta in 1966, the only rookie left-handed relievers to strike out more than Biddle were Jonny Venters (93 in 2010) and Minter ... Held opponents to a .102 average (12-for-118) when he got two strikes…That was the fifth-best mark among qualified pitchers in the N.L. ... Earned his first career win in his major league debut, tossing a scoreless ninth inning in the Braves' 4-3 win vs. NYM on 4/21 ... Collected his only save, 8/5 at NYM, tossing a scoreless 10th inning ... Doubled for his first career hit, 4/29 at PHI ... Began the season with Triple-A Gwinnett, making four scoreless appearances before the Braves recalled him on 4/17.
Spent the season with Double-A Mississippi, appearing in a career high-tying 27 games in relief…Marked his first season working as a full-time reliever…Made one relief appearance (in 2011) prior...Finished the season on the disabled list with a left shoulder strain…His final appearance came on 7/11 vs. Jacksonville...Righties went 26-for-134 (.194) with a .306 slugging percentage against him, while lefties hit .400 (22-for-55) and slugged .509...Went more than 1.0 inning in 20 of his 27 outings, including a season-high 3.2 innings on 5/10 vs. Mobile.
Missed the entire season recovering from 2015 "Tommy John" surgery ... Traded from Philadelphia to Pittsburgh on 2/3/16 before the Pirates designated him for assignment on 3/15...Joined the Braves four days later on 3/19.
Went 9-6 with a 4.95 ERA (69 ER/125.1 IP) in 24 combined starts between Double-A Reading and Triple-A Lehigh Valley ... Promoted to Lehigh Valley on 7/8 and won each of his first two decisions with the IronPigs ... Named both the International League and the Phillies Minor League Pitcher of the week for the week of 7/13-19 after going 1-0 with a 0.00 ERA ... Placed on the disabled list on 8/28 with a left elbow sprain and missed the remainder of the season...Underwent "Tommy John" surgery performed by Dr. Michael Cicotti on 10/15.
Began season with Double-A Reading...Placed on the DL on 8/22 with a strained right quadriceps and missed remainder of the season.
Spent the entire season with Double-A Reading... Finished tied for first in the Eastern League in starts, tied for second in complete games, third in strikeouts and ninth in ERA ... Selected to the EL mid-season All-Star team ... Took a perfect game into the seventh inning on 4/22 at Harrisburg while recording a career-high 16 strikeouts; also went 2-for-3 with a pair of doubles at the plate ... Earned the win for the U.S. team at the All-Star Futures Game on 7/14 at Citi Field...Went 1.1 innings, striking out one and walking one.
Spent entire season with High-A Clearwater ... Finished first in the Florida State League in strikeouts, tied for second in wins and starts, third in ERA and fourth in innings pitched ... Named to the FSL's mid-season All-Star team... Also took home Florida State League Pitcher of the Week honors on two occasions (5/28 to 6/3 and 8/20-26) ... Threw 7.0 no-hit innings on 8/17 vs. Brevard County ... Named Philadelphia's top prospect by Baseball America following the season.
Spent the season with Single-A Lakewood and was named by Baseball America as Philadelphia's second-best prospect following the season.
Made his professional debut with the GCL Phillies ... Tabbed by Baseball America as Philadelphia's eighth-best prospect following the season.