Houston Astros

The Houston Astros selected Lyles with the 38th pick in the 2008 Major League Baseball draft. After signing, Lyles pitched in the Rookie-level Appalachian League, where he recorded 64 strikeouts in 49+2⁄3 innings.^[3] In 2010, Baseball America named Lyles the Astros' top pitching prospect.^[4] That season, he appeared in the All-Star Futures Game.^[5][6]

Lyles had his contract purchased by Houston on May 28, 2011.^[7] His first start with the Houston Astros came at Wrigley Field on May 31. He pitched 7+ innings and allowed two earned runs in a 7–3 win.^[8] He also got his first career hit. Lyles recorded his first major league win August 3, 2011, against the Cincinnati Reds.^[9] In the 2011 season with Houston, he was 2–8 with a 5.36 ERA.^[10]

The Astros optioned Lyles to Oklahoma City at the start of the 2012 season.^[11] On April 29, Lyles was recalled to Houston to make a start for Kyle Weiland, who was placed on the 15-day DL. Lyles was 4–0 with a 3.46 ERA with 24 strikeouts in 26 innings at Oklahoma City.^[12] Lyles gave up three runs over six innings of work. Though he left with the lead, the bullpen lost control, and the Astros lost, 6–5. After the game, Lyles was optioned back to Triple-A to make room for Marwin González, who was activated from paternity leave.^[13] In the 2012 season with Houston, he was 5–12 with a 5.09 ERA.^[10]

In the 2013 season with the Astros, he was 7–9 with a 5.59 ERA.^[10] In AAA with Oklahoma City, he was 2–2 with a 5.32 ERA.^[10]

Colorado Rockies

On December 3, 2013, Lyles, along with outfielder Brandon Barnes, was traded to the Colorado Rockies for outfielder Dexter Fowler and a player to be named later.^[14][15] In 22 starts, Lyles tied a career high with 7 wins and posted his lowest ERA of his career with a 4.33 in 126.2 innings.

On January 14, 2015, Lyles and the Rockies avoided arbitration, agreeing to a one-year contract worth $2.475 million.^[16] On June 1, Jordan was placed on the 15-day disabled list with a medial collateral ligament injury in his left big toe.^[17] On June 3, it was declared Lyles would need left big toe surgery, ending his season after just 10 starts.^[18] In 2015 with the Rockies, he was 2–5 with a 5.14 ERA.^[10]

In 2016, Lyles began as a starter but after five starts, he was shifted to the bullpen for the remainder of the season. For the 2016 season, Lyles posted a record of 4–5 with a 5.83 ERA in 40 games.^[10] In AAA with Albuquerque he was 4–2 with a 5.44 ERA.^[10]

The following season in 2017, Lyles was used mainly out of the bullpen to disastrous results, as he posted an 0–2 record with an ERA of 6.94 in 33 games.^[10] He was designated for assignment and released by the Rockies on August 1.^[19]

San Diego Padres

Lyles signed a minor league deal with the San Diego Padres on August 8, 2017.^[20] The Padres used Lyles as a starter for the final month of the season, in which he posted a 1–3 record with an ERA of 9.39.^[10]

On November 2, 2017, he was granted free agency.^[19] On December 17, 2017, the Padres signed Lyles to a one-year, $1 million contract to remain with the team.^[21] On May 15, 2018, Lyles threw 7 perfect innings against the Colorado Rockies at home before allowing a hit in the eighth.^[22] Lyles split time between the bullpen and the rotation, appearing in 24 games while making 8 starts. He pitched to a 4.29 ERA in 71+1⁄3 innings.

Milwaukee Brewers

On August 5, 2018, the Milwaukee Brewers claimed Lyles from the Padres off of trade waivers.^[23] In 11 games, Lyles posted a 3.31 ERA in 16+1⁄3 innings.^[10]

Pittsburgh Pirates

On December 17, 2018, Lyles signed a one-year, $2.05 million contract with the Pittsburgh Pirates for the 2019 season.^[24]

Milwaukee Brewers (second stint)

After pitching to a 5–7 record and a 5.36 ERA with the Pirates, Lyles was traded back to the Brewers for Cody Ponce on July 29.^[25] He finished the season going 7–1 with a 2.45 ERA over 58+2⁄3 innings for the Brewers.^[26]

Texas Rangers

On December 13, 2019, Lyles signed a two-year contract with the Texas Rangers worth $16 million.^[27] In 2020 he went 1–6 with a 7.02 ERA.^[28] He tied for the AL lead in earned runs allowed, with 45.^[29] Lyles posted a 10–13 record with a 5.15 ERA and 146 strikeouts over 180 innings in 2021. He led the majors with 38 home runs allowed.^[30]

Baltimore Orioles

Lyles signed a one-year, $5.5 million contract with the Baltimore Orioles on March 12, 2022.^[31] On September 21, Lyles tossed his second career complete game, allowing only 3 hits in a start against the Detroit Tigers. The only blemish on his line was a Kerry Carpenter home run as the Orioles won the game 8–1.^[32] On the year, he was 12-11 with a 4.42 ERA over a career high 32 starts covering 179 innings. He led a resurgent Orioles pitching staff in innings pitched, strikeouts, and wins.^[33] He became a free agent on November 9, 2022 when the Orioles declined to pick up his contract option for 2023.^[34]

Kansas City Royals

On December 28, 2022, Lyles signed a two-year contract with the Kansas City Royals worth $17 million.^[35] He began 2023 at 0–11, with the Royals losing in each of his first fifteen starts to set a Live-ball era MLB record. His first win was a 9–4 victory over the Tampa Bay Rays at Tropicana Field on June 24.^[36] In 31 starts, Lyles had a 6–17 record, a 6.28 ERA, 3 complete games, 39 home runs allowed, and was charged with a league leading 130 runs (124 earned). He was the worst qualified pitcher in 2023, leading the MLB in losses and had the highest ERA amongst qualified pitchers.

On March 21, 2024, manager Matt Quatraro announced that Alec Marsh had beat out Lyles for the final rotation spot, pushing Lyles to the bullpen to begin the year.^[37]