His injuries then led to a mid-season surgery, but also rehab, a return to the majors in 1990 and a new understanding of the game, The Times wrote.
"I learned you can't take anything for granted," Harkey told The Times. "In this game, anything can change in the blink of an eye. There are some people who think they have this game licked, and all of a sudden it turns on them. You have to be ready for anything, because anything can happen."
Harkey's return to the field in 1990 saw him go 12-6 for the Cubs, with a 3.26 ERA. He went on to see time in six more major league seasons, three of them with 20 or more outings.
He then went on to a coaching career that saw him coach in the minors and then the bigs, a career that continued in 2019 as bullpen coach for the New York Yankees.
Harkey's pro career began in 1987, taken by the Cubs in the first round of the draft out of Cal State Fullerton.
Harkey started with the Cubs between single-A Peoria and AA Pittsfield. He then played 1988 between Pittsfield and AAA Iowa.
In September 1988, he debuted in Chicago. He saw five starts and went 0-3, but had a 2.60 ERA. Then came his 1989 season. He saw just 12 starts at AAA Iowa that year.
He returned to the majors with his 12-6 campaign in 1990. But he then had abbreviated big league seasons in 1991 and 1992, with four starts and seven starts, respectively.
Harkey then got a career-high 28 starts in 1993. He went 10-10, with a 5.26 ERA. That August, he went nine innings for a win over the Marlins, giving his bullpen a rest in the process.
"We got the whole package," Cubs manager Jim Lefebvre told The South Florida Sun-Sentinel of Harkey's outing. "Harkey not only gave us innings, he gave us a complete game and a great effort. Considering the condition of our bullpen, we couldn't have asked for more."
Harkey signed with the Rockies for 1994 and then split 1995 between the Athletics and the Angels. He played 1996 at AAA, then returned for 10 final outings with the Dodgers in 1997.
Harkey started his coaching career by 2000, at high-A Rancho Cucamonga. He made AA Mobile in 2005, then reached the majors in 2006 with the Marlins as a bullpen coach.
He arrived with the Yankees in 2008 as bullpen coach. Then, in 2014, Harkey got the top pitching coach job himself, with Arizona. He stayed there two seasons, before returning to the Yankees in his old job as bullpen coach.
Harkey explained his role as bullpen coach to ESPN in September 2019, saying that, while pitching coaches worry about the scouting reports, his role is as more of a psychologist.
"You're with the guys right up until the very moment they have to go in the game, and frequently it's in high-leverage situations," Harkey told ESPN. "So to be able to find out what it is that helps them relax or helps them feel more confident when they're going into the game, that's probably the biggest thing."
- Los Angeles Times, April 27, 1990: Mike Harkey Bounces Back in a Big Way
- South Florida Sun-Sentinel, Aug. 13, 1993: Cubs take Armstrong deep
- ESPN, Sept. 28, 2019: A survival guide to life in high-stakes Yankees bullpen
Made the Majors:1,159-36.2%-X
Never Made Majors:2,044-63.8%
5+ Seasons in the Majors: 480
10+ Seasons in the Minors:283