Graduated from Westminster (CA) High School...his brother Greg, a lefthanded pitcher, was drafted by the Angels in the 15th round of the June 2014 first-year player draft...follow on Twitter @tylermahle.
Made his third consecutive Opening Day roster... At age 25, pitched in his fourth Major League season... Opponents hit just .198... Pitched out of the starting rotation in each of his first two apps (0-0, 1.80, .194 oba) and in each of his last 7 apps (2-2, 3.67, .198 oba)... In the first relief appearance of his Major League career, following 54 consecutive starts, entered the 5-4 loss on 8/12 vs KC in the second inning to replace starter Wade Miley...threw 63 pitches in 3.1 innings (2h, 3er, 3bb, 6k, Salvador Perez solo HR)... Was his first professional relief appearance since 2015, when he made 26 starts and one relief appearance... From 8/28-9/8 produced three consecutive quality starts, tying his career high (1-1, 3.48)... Didn't allow a home run in any of his last four apps of the regular season (17.2ip)... Was on the Reds' Wild Card Series roster but didn't pitch in the two-game series sweep loss at ATL.
Made his second consecutive Opening Day roster...started the Reds' sixth game, on 4/4 at Pit, and threw 6.0 shutout innings (5h, 0bb, 5k)...Went 2-10, 4.93 in 19 starts before he went on the 10-day injured list on 7/22 with a left hamstring strain...On 8/16 and 8/21 made rehabilitation starts for Louisville before he was reinstated from the IL and optioned to Louisville on 8/22...made 1 more start for the Bats before he was added to the Reds' roster on 9/1 to start the day game of the day/night doubleheader at StL...In 6 starts for the Reds after that September callup went 1-2, 5.93...the Reds won 3 of his last 4 starts of the season...Celebrated his 25th birthday with a 3-1 win at Pit on the final day of the season, snapping his career-high 7-game losing streak (6/7-9/25)...was the longest losing streak by a Reds pitcher in 2019...Was announced as the season finale's starting pitcher fewer than 24 hours before first pitch...filled that spot in the rotation vacated by RHP Trevor Bauer, who for the second consecutive day was scratched because of illness...In consecutive starts on 5/2 and 5/7, suffered the 1-0 loss at NYM in which Noah Syndergaard became just the seventh pitcher in Major League history to homer in a 1-0 complete game and then a 2-0 loss at Oak in which Mike Fiers threw his second career no-hitter... in those 2 games, Reds batters combined to go 4-for-57 (.070).
Among National League rookie pitching leaders ranked ninth in ERA, T2nd in wins, T5th in starts, eighth in innings pitched, sixth in strikeouts and ninth in opponents' batting average...was on the Opening Day roster and went 7-9, 4.95 in 22 starts before he was optioned to Louisville on 8/3...when optioned to Louisville was leading the staff with 7 wins, was tied with Sal Romano for the staff lead with 7 quality starts and was leading all National League rookies in wins, starts, innings pitched and strikeouts while ranking sixth in ERA...was recalled from Louisville after the minor league season ended but was hampered by right shoulder fatigue and made just 1 appearance following that 9/4 promotion, started the 7-6 loss on 9/9 vs SD (3ip, 5h, 2er, 3bb, 5k, 1hr)...from 6/1-7/6 went 4-0, 2.04 in the first winning streak of his career, tying Anthony DeSclafani and Matt Harvey for the longest winning streak by a Reds starter in 2018...his career-high 12 strikeouts in the 12-3 win on 6/30 vs Mil were the most by a Reds pitcher this season, the most by a Reds pitcher since rookie LHP Amir Garrett had 12 strikeouts on 4/19/17 vs Bal and the most by a Reds righthander since rookie Raisel Iglesias had 13 strikeouts on 8/23/15 vs Ari...in the 12-inning, 9-7 win on 4/24 vs Atl, took a 5-0 lead and a no-hitter into the seventh before Freddie Freeman led off the inning with a solo HR...was the victim of a blown save when the Braves tied it at 7-7 with 4 runs in the ninth inning off Amir Garrett and Raisel Iglesias, including a second home run by Freeman, but the Reds won it on Scooter Gennett's 2-run, walkoff home run off Max Fried...his third-inning single in the 5-0 loss on 4/8 at Pit was the only Reds hit in Jameson Taillon's first career complete game...was the first Reds pitcher to record the team's only hit in a game hit since Earl Yingling did it on 9/19/1914 at Brooklyn Robins...was 1 of 5 rookies on the Opening Day roster (RHP Jackson Stephens, RHP Zack Weiss, OF Phillip Ervin, OF Jesse Winker) and the only rookie to begin the 2018 season in the Reds' starting rotation...entered the season rated by Baseball America the fourth-best prospect in the organization.
Was a Baseball America Minor League All-Star, MLBPipeline.com's Reds Minor League Pitcher of the Year, the organization's Minor League Pitcher of the year and a mid-season Southern League All-Star...following the season was rated the 13th-best prospect in the Southern League, and his control was rated the best in the SL...in his Major League debut, from 8/27-9/13 made all his 4 starts for the Reds...spent most of the season at Pensacola and Louisville, where he combined to finish 10-7, 2.06 in 24 starts (144.1ip, 109h, 30bb, 138k, 9hr)...led the organization in ERA while ranking T3rd in wins and fourth in strikeouts...among all minor league pitchers ranked eighth in ERA and sixth in WHIP (0.96)...was Cin and Minor League Baseball's Southern League Pitcher of the Month for April (5gs, 4-0, 0.55)...when promoted to Louisville on 6/22 led the Southern League in innings pitched and WHIP (0.87) while ranking among the leaders in ERA (2nd), strikeouts (2nd), opponents' BA (.190, 2nd) and wins (3rd)...in a 1-0 win at Mobile on 4/22 threw the first perfect game Blue Wahoos history and the second 9-inning perfect game in Southern League history (8/14/1970, Montgomery's Charles Swanson vs Savannah)...went to a 3-ball count just once (8k, 88 pitches, 68 strikes)...following the perfect game was named Southern League Pitcher of the Week...made his Major League debut in a 5-2 loss on 8/27 vs Pit (5ip, 4h, 3er, 4bb, 5k)...struck out his second batter (Adam Frazier) and in his second plate appearance singled off Jameson Taillon for his first career hit...recorded his first Major League win in his fourth and final start of the season, threw 5.0 shutout innings in a 6-0 win on 9/13 at StL (4h, 3bb, 4k)...entered the season rated by Baseball America the 12th-best prospect in the organization and Reds minor league pitcher with the best control.
In 27 starts at Class A Daytona and Class AA Pensacola combined to finish 14-6, 3.64...began the season at Daytona and was promoted on 6/2...among all Reds minor league pitchers tied for the lead in wins (Tejay Antone) while ranking third in strikeouts (141 in 150.2ip) and seventh in ERA...at Daytona was Florida State League Pitcher of the Week for 6/13-6/19...following the season was rated by MLB.com the organization's seventh-best prospect...on 12/9 was invited to 2017 Major League spring training camp, his first.