Mariners

Seattle Mariners: Top 10 individual pitching seasons in team history

By Ed Stein

Jamie Moyer, Seattle Mariners Hall of Fame.

These are the ten best individual pitching seasons in the 44-year history of the Seattle Mariners.

The Seattle Mariners have been in business since 1977. In those 44 seasons, they’ve had some outstanding pitchers. From fireballer Randy Johnson to changeup expert Jamie Moyer to spitball master Gaylord Perry, the M’s had a little bit of everything.

Before we get into the Top 10 individual pitching seasons, here are a few fun facts about M’s pitching seasons as a whole.

The Seattle Mariners…

  • Have two Cy Young winners – Randy Johnson 1995 and Felix Hernandez 2010.
  • Finished with a team ERA under 3.50 once, 2014 (3.17) and over 5.00 three times.
  • Broke 1,300 strikeouts in a season three times, and none of them included Randy Johnson, who led his league in strikeouts nine times – 2018 (1,328), 2016 (1,318), and 2014 (1,317).
  • Led the American League in strikeouts seven times, five with Randy Johnson.

On to the list

Honorable Mention

Felix Hernandez 2009 – He was 19-5 with a 2.49 ERA. Hernandez led the league in wins and was the Cy Young runner up.

J.J. Putz 2007 – The league leader in games finished, J.J. Putz had a 6-1 record, 40 saves, and a 1.38 ERA.

Jamie Moyer 2003 – Moyer won 21 games with a 3.27 at age 40.

10. Freddy Garcia – 2001

Someone from the magical 2001, 116-win season had to make this list. Jamie Moyer was the 20-game winner, but Freddy Garcia was the staff ace. The Chief led the A.L. in three statistical categories for one of the best teams in baseball history.

  • 18-6 record.
  • 1st – 238.2 innings pitched.
  • 1st – 3.05 ERA.
  • 1st – 0.6 home runs per nine innings (HR/9).
  • 3rd in Cy Young voting.

Next: Page 2 – Numbers 7-9

Marco Gonzales, Seattle Mariners.

9. Marco Gonzales – 2020

This might be a stretch for some long-time fans but stick with it for a sec. The Seattle Mariners were in contention for the playoffs up to the last week of the season. Marco Gonzales was the one constant on an otherwise shaky pitching staff in 2020.

His seven wins in the shortened season were second in the league despite the fact Seattle used a six-man rotation. It’s a shame Gonzales didn’t get one Cy Young vote. He earned it.

  • 7-2 record, 3.10 ERA (8th).
  • 1st – 0.90 walks per nine innings.
  • 1st – 9.14 strikeout to walk ratio.

8. Mark Langston – 1987

On a team that won 78 games, Mark Langston had 19 wins (24.4 percent). The Seattle Mariners needed every one of those wins because number two starter Mike Moore lost 19. Langston claimed his third A.L. strikeout total in 1987 and picked up the first of seven Gold Gloves for good measure.

  • 19-8 Record, 3.84 ERA.
  • 1st – 262 strikeouts
  • 1st – 8.7 strikeouts per nine innings (K/9).
  • 5th in Cy Young voting.

7. Hisashi Iwakuma – 2013

Seattle Mariners Manager Eric Wedge had a nice one-two punch with Hisashi Iwakuma, and Felix Hernandez, too bad no one else on the team could pitch. After a so-so rookie year, the Japanese import stepped it up in his sophomore season. His nasty 1.004 WHIP would have led the league in four of the previous six seasons.

  • 14-6 record, 2.66 ERA (3rd).
  • 1st – 7.0 pitchers WAR
  • 3rd in Cy Young voting.

Next: Page 3 – Numbers 4-6

Randy Johnson, Seattle Mariners (photo by Dave Sizer, via Wikimedia).

6. Randy Johnson – 1993

This was the Big Unit’s first truly great season in a Hall of Fame career. One of the biggest reasons was that he finally got control of that rocket launcher attached to his left shoulder. After walking at least 120 batters each of the previous three seasons, he cut his bases on balls to 99. Johnson won 23 percent of all M’s games and had an outstanding 1.112 WHIP.

  • 19-8 record, 3.24 ERA (8th)
  • 1st – 308 strikeouts.
  • 1st – 10.86 K/9.
  • 1st – 6.5 hits per nine innings (H/9).
  • 2nd in Cy Young voting.

5. Edwin Diaz – 2018

Edwin Diaz turned in one of the most dominating seasons for a relief pitcher in recent memory. “Sugar” saved 57 games, converting 93.4 percent of his opportunities. He was the A.L. reliever of the month four times. It wasn’t that he just saved games; Diaz blew hitters away. In 73.1 innings pitched, he had 124 strikeouts and a tiny 0.791 WHIP.

  • 1st – 57 saves.
  • 1st – 15.2 K/9 (relief pitchers).
  • 8th in Cy Young voting.

4. Felix Hernandez – 2014

Felix Hernandez got off to a hot start in 2014. From his opening day start through July 25, King Felix was 11-2, with a 1.99 ERA and 172 strikeouts. He was the ace of a good M’s pitching staff, taking the hill every five days. Unfortunately, he didn’t get much run support.

  • 15-6 Record.
  • 1st – 2.14 ERA.
  • 1st – 34 Starts.
  • 1st – 0.915 WHIP.
  • 1st – 6.5 H/9.
  • 2nd in Cy Young voting.

Next: Page 4 – The Top 3

Felix Hernandez, Seattle Mariners (photo by Matt McGee, via Flickr).

3. Felix Hernandez – 2010

Very rarely does a pitcher with a record one game over .500 win the Cy Young Award. That’s how outstanding Hernandez was in 2010. He was about the only good thing Seattle’s pitching staff had that year; the team won only 61 games. King Felix was also dependable, once again leading the league in starts.

One side note, Hernandez made the All-Star team six out of seven years between 2009-2015. This was the year he wasn’t selected.

  • 13-12 record.
  • 1st – 34 starts.
  • 1st – 249.2 innings pitched.
  • 1st – 1001 batters faced.
  • 1st – 2.27 ERA.
  • 1st – 7.0 H/9.
  • 2010 Cy Young Winner.

2. Randy Johnson – 1997

This was the first year Seattle hit 90 wins. As well as the first time they broke the three million fan mark. Undoubtedly many came to see Randy Johnson pitch. He lost one home start all season. Johnson won 20 games for the first time, and his 2.28 ERA was the best of his career. Because he missed a few starts, the Big Unit only had 291 strikeouts and finished second (one behind Roger Clemens.

  • Record 20-4, 2.28 ERA (2nd in both wins and ERA).
  • 1st – 6.2 H/9.
  • 1st – 12.3 K/9.
  • 1st – .833 win/loss percentage.
  • 2nd in Cy Young voting.

1. Randy Johnson – 1995

This was the Seattle Mariners first-ever playoff season, so it’s not much of a surprise the team’s best pitcher is ranked here. Johnson had one of his best seasons in 1995, posting an 18-2 record. Both of his losses came when the Seattle Mariners scored two or fewer runs.

Most importantly, he won his first of five Cy Young Awards. Johnson carried the pitching staff with a 2.48 ERA. None of the other M’s starters got under 4.50. The Big Unit was money every time he took the hill.

  • Record 18-2 (2nd wins).
  • 1st – 2.48 ERA
  • 1st – .900 winning percentage.
  • 1st – 294 strikeouts.
  • 1st – 1.045 WHIP
  • 1st – 6.7 H/9.
  • 1st – 0.5 HR/9.
  • 1st – 12.3 K/9.
  • 1st – 4.53 (K/BB).
  • 1995 Cy Young Winner.

The Seattle Mariners have some good young pitchers in their organization. Who will be the next one to make this list.

Pages: 1 2 3 4

Ed Stein