Mike Flanagan vs Randy Johnson: Career Stats Comparison
Randy Johnson has the better career line of the two, leading 9 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Mike Flanagan played 1975–1992 as a pitcher; Randy Johnson played 1988–2009 as a pitcher.
- ERA (Earned Run Average):
- Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
- W (Wins):
- Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
- SO (Strikeouts):
- For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
- WHIP (Walks and Hits per Inning Pitched):
- Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.
Data updated
Mike Flanagan (1975–1992) and Randy Johnson (1988–2009) — breaking in during the 1970s and the 1980s respectively, so they pitched against very different hitting environments. Mike Flanagan finished with 167 wins and 1,491 strikeouts; Randy Johnson finished with 303 wins and 4,875 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Randy Johnson, with 3.29 to Mike Flanagan's 3.90.
- Who won more games? Randy Johnson, with 303 to Mike Flanagan's 167.
- Who recorded more strikeouts? Randy Johnson, with 4,875 to Mike Flanagan's 1,491.
- Who had the better WHIP? Randy Johnson, with 1.17 to Mike Flanagan's 1.33.
- Who pitched more innings? Randy Johnson, with 4,135.1 to Mike Flanagan's 2,770.0.
- Who threw more shutouts? Randy Johnson, with 37 to Mike Flanagan's 19.
- Who has the higher career Pitcher PIV? Randy Johnson, with 122,530 career Pitcher PIV to Mike Flanagan's 1,239.
Mike Flanagan
Randy Johnson
Career Stats Side-by-Side
Every cell below is a career total or career rate. Cells highlighted in green mark the player who leads that line. Lower ERA, WHIP and BB/9 lead; higher K/9 leads. 12 of the 16 lines below are scored; the other 4 are counting totals on which fewer is not an achievement, so no one is awarded them. Totals where fewer is not an achievement -- losses, walks and hits allowed -- are left unmarked, because they track how long someone pitched rather than how well. Rate stats are not era-adjusted, and the 1970s and the 1980s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Mike Flanagan | Randy Johnson |
|---|---|---|
| Wins | 167 | Leads: 303 |
| Losses not scored | 143 | 166 |
| Games | 526 | Leads: 618 |
| Games Started | 404 | Leads: 603 |
| Complete Games | Leads: 101 | 100 |
| Shutouts | 19 | Leads: 37 |
| Saves | Leads: 4 | 2 |
| Strikeouts | 1,491 | Leads: 4,875 |
| Walks not scored | 890 | 1,497 |
| Hits Allowed not scored | 2,806 | 3,346 |
| Home Runs Allowed not scored | 251 | 411 |
| Innings Pitched | 2,770.0 | Leads: 4,135.1 |
| ERA | 3.90 | Leads: 3.29 |
| WHIP | 1.33 | Leads: 1.17 |
| K/9 | 4.84 | Leads: 10.61 |
| BB/9 | Leads: 2.89 | 3.26 |
PIV Comparison through 2025
By PIV (Player Impact Value), Randy Johnson outpaces Mike Flanagan 122,530 to 1,239 — driven by both sides of the ledger: 5,105 PIV per season to 65, across 24 seasons to 19. PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
PIV is computed through the 2025 season. The career totals on this page include 2026 to date, so PIV does not yet reflect the 2026 season.
Peak Seasons
The best single seasons each player produced, ranked by ERA among qualified workloads (120+ innings).
Mike Flanagan — top 3 seasons by ERA (lower is better)
Randy Johnson — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Randy Johnson leads in wins, strikeouts, ERA, and WHIP, while Mike Flanagan owns no headline categories. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Randy Johnson. PIV agrees: Randy Johnson grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Mike Flanagan and Randy Johnson careers compare
From 1988 through 1992, Mike Flanagan and Randy Johnson were in the majors together. With 526 games against 618 across 19 and 24 PIV seasons, neither player's totals owe much to extra seasons. The green cells for Mike Flanagan are complete games (101 to 100), saves (4 to 2), and walks per nine (2.89 to 3.26). By rate, Mike Flanagan struck out 4.84 and walked 2.89 per nine innings; Randy Johnson struck out 10.61 and walked 3.26. Mike Flanagan was mainly a starter (404 starts in 526 games), and Randy Johnson was mainly a starter (603 starts in 618 games). Randy Johnson allowed fewer baserunners, a 1.17 WHIP to Mike Flanagan's 1.33.
Mike Flanagan vs Randy Johnson: Frequently Asked Questions
- Who was better, Mike Flanagan or Randy Johnson?
- By the career statistics compared on this page, Randy Johnson leads Mike Flanagan in 9 of the 12 scored categories.
- Who had the better ERA?
- Randy Johnson, with 3.29 to Mike Flanagan's 3.90.
- Who won more games?
- Randy Johnson, with 303 to Mike Flanagan's 167.
- Who recorded more strikeouts?
- Randy Johnson, with 4,875 to Mike Flanagan's 1,491.
- Who had the better WHIP?
- Randy Johnson, with 1.17 to Mike Flanagan's 1.33.