10 Greatest Pitchers in Major League Baseball’s History

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Baseball’s history isn’t just rich—it’s practically dripping with iconic figures like a hot dog left too long in the sun. Pitchers, those strange creatures who voluntarily throw their arms out 100+ times per game, inspire a special kind of awe and admiration.

Understanding these mound magicians requires more than just squinting at their stats. You’ve got to appreciate their skill, era, and influence—like trying to judge a 1950s Elvis against 1980s Madonna (both legends, completely different universes).

What makes a pitcher truly elite rather than just another arm with a decent ERA? It’s time to settle in with your peanuts and Cracker Jacks as we explore the top 10 hurlers who made batters question their career choices.

10. Christy Mathewson (New York Giants, Cincinnati Reds)

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Back when baseball was played in wool uniforms (a decision that surely made summer games just delightful), Christy Mathewson was doing things with a baseball that seemed downright unfair for the Dead Ball Era.

His 33 wins in 1905 would make modern agents salivate and modern arms surgeons cringe. With a career 2.13 ERA over 17 seasons, “Big Six” made consistency look as easy as breathing—all while pitching in an era when “Tommy John surgery” would have sounded like a 19th-century snake oil salesman.

The three complete-game shutouts in the 1905 World Series sound like a typo to today’s pitch-count-obsessed managers. Modern pitchers get ice packs after six innings; Mathewson apparently just dipped his arm in the Hudson and showed up ready for the next complete game.

9. Bob Gibson (St. Louis Cardinals)

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If pitchers were ranked by “ability to make grown men reconsider their life choices,” Bob Gibson would be the undisputed GOAT. His glare alone caused a measurable drop in batting averages across the league.

Gibson’s 1968 season wasn’t just dominant—it was so ridiculous (1.12 ERA with 13 shutouts) that MLB literally changed the rules of baseball. That’s like beating your friends so badly at Monopoly that Parker Brothers sends you a cease-and-desist letter.

His 251-174 record only tells part of the story. Gibson pitched complete games like they were going out of style (which, unfortunately, they were) and collected two World Series rings while making the Cardinals the team nobody wanted to face in October.

8. Greg Maddux (Chicago Cubs, Atlanta Braves, Los Angeles Dodgers, San Diego Padres)

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While the steroid era turned baseball into a home run derby that would make even the most patient pitching coach contemplate early retirement, Greg Maddux was out there playing chess while everyone else played whack-a-mole.

His 3.16 ERA during the era of juiced balls and biceps is like maintaining a perfect driving record while participating in a demolition derby. With four straight Cy Young Awards (1992-1995), Maddux wasn’t just good—he was annoyingly, consistently brilliant.

The 18 Gold Gloves suggest he could have fielded grounders while solving Sunday crossword puzzles. Never throwing harder than your average high school varsity pitcher, Maddux destroyed hitters with movement that made physics professors question their understanding of reality.

7. Sandy Koufax (Brooklyn/Los Angeles Dodgers)

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Sandy Koufax was basically mythical. From 1962 to 1966, he put up numbers that sound like video game glitches: a 1.86 ERA, four no-hitters, and 382 strikeouts in one season. His curveball was an act of violence disguised as grace.

He retired at 30 with a career cut short by arm pain—but what a five-year stretch: three Cy Youngs, a perfect game, and a postseason ERA of 0.95? Koufax didn’t need longevity to earn immortality. He simply condensed greatness into a white-hot burst of brilliance.

6. Tom Seaver (New York Mets, Cincinnati Reds, Chicago White Sox, Boston Red Sox)

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Tom Seaver was The Franchise. With textbook mechanics and a right arm blessed by the baseball gods, Seaver racked up 311 wins and 3,640 strikeouts with surgeon-like precision. He made dominance look boring—and that’s a compliment.

The 1969 Miracle Mets? That was Seaver’s show, leading the team to its first title with a 25-win season and a cool 2.21 ERA. He snagged three Cy Youngs and struck out everyone from legends to rookies wondering, “What just happened?” Pure consistency, decade after decade.

5. Lefty Grove (Philadelphia Athletics, Boston Red Sox)

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Before “ERA+” was even a thing, Lefty Grove was the advanced stat. With a ridiculous 148 career ERA+ and nine ERA titles, Grove sent hitters back to the dugout thinking up new career plans. He racked up 300 wins and two MVPs while barely breaking a sweat.

Pitching during the lively ball era, Grove still led the league in strikeouts seven years running. His fastball was pure evil, and his control was so precise it could thread a needle from the mound. Pitchers today still wish they could be this unfair.

4. Pedro Martinez (Los Angeles Dodgers, Montreal Expos, Boston Red Sox, New York Mets, Philadelphia Phillies)

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Pedro Martinez was a 5’11” bundle of pure baseball chaos who treated Yankee Stadium like his personal playground during the height of the Yankees dynasty (much to the horror of New York fans and the delight of everyone else).

His 2000 season statistics (1.74 ERA in the AL East during the steroid era) make about as much sense as bringing a spork to a knife fight and somehow winning. It’s like he was pitching on rookie mode while everyone else was on legendary.

With three Cy Young Awards (1997, 1999, 2000) and 313 strikeouts in 1999, Pedro didn’t just dominate—he embarrassed professional hitters who suddenly found themselves swinging like they were trying to hit mosquitoes with a pool noodle.

3. Roger Clemens (Boston Red Sox, Toronto Blue Jays, New York Yankees, Houston Astros)

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Roger Clemens’ career is the baseball equivalent of an Oscar-winning movie with a controversial director—undeniably brilliant, impossibly dominant, but accompanied by an asterisk the size of Texas.

His numbers sound made up: 354 wins, 4,672 strikeouts, and seven Cy Young Awards spanning three decades. The man won Cy Youngs in both “Thriller” and “Umbrella” eras of music—a testament to longevity that’s either miraculous or suspicious, depending on whom you ask.

The steroid allegations loom over his legacy like a dark cloud at a picnic, turning what should be unanimous Hall of Fame celebrations into awkward debates. His two 20-strikeout games remain among baseball’s most dominant performances (no chemical enhancement required for appreciation).

2. Randy Johnson (Montreal Expos, Seattle Mariners, Houston Astros, Arizona Diamondbacks, New York Yankees, San Francisco Giants)

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When your nickname is “The Big Unit” and you stand 6’10” with a mullet that defies both gravity and fashion sense, you’ve already won half the battle before throwing a pitch. Randy Johnson won the other half by throwing fastballs that seemed to arrive before he released them.

His five Cy Young Awards (1995, 1999-2002) and 4,875 strikeouts came with enough intimidation to make batters contemplate early retirement plans. That poor bird that exploded on contact with his fastball unwittingly created the perfect metaphor for what Johnson did to batting averages.

The 2001 World Series performance alongside Curt Schilling helped the Diamondbacks win it all in just their fourth year of existence. History’s greatest lefty made batting left-handed against him seem like a form of self-punishment that should require a doctor’s note.

1. Walter Johnson (Washington Senators)

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Before video existed to capture his greatness (truly unfortunate timing), Walter Johnson was out there throwing smoke that can only be described through increasingly hyperbolic newspaper accounts and wide-eyed oral histories.

His 417 wins and 110 shutouts in the Dead Ball Era are numbers so absurd they look like someone accidentally held down the “0” key too long. Johnson completed 531 of his 666 starts—a workload that would make modern trainers faint and agents call their lawyers.

After carrying the perennially disappointing Senators for 21 years (basically Atlas with a baseball glove), Johnson finally won a World Series in 1924. His 3,508 strikeouts stood as the record for nearly 60 years, which is like setting a smartphone battery record that lasts until 2080.

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Spencer Rickles Writer
Spencer Rickles was born and raised in Atlanta and has followed the Braves closely for the last 25 years, going to many games every season since he was a child.