One record that falls outside the unbreakable records lsit below is New York Yankees' starting pitcher Don Larsen's perfect game against the Brooklyn Dodgers in game five of the 1956 World Series. That feat is very impressive and is highly unlikely to be duplicated, but it is outside the list because of Philadelphia Phillies' starting pitcher Roy Halladay.
On Oct. 6, 2010, Halladay threw a no-hitter against the Cincinnati Reds in game one of the National League Division Series.
There are three MLB records that are unlikely to be broken listed below. The records listed below only deal with playing performances and not consecutive game streaks.
They include statistics from any professional MLB game, 19th century to modern-day.
Some records are not listed below that might have been or was achieved while the player was using a Performance Enhancing Drug/s. These records include most home runs in a single season and all-time.
The first records that are listed below are the MLB ones and all of the information is from baseball-reference.com.
1. Hall of Fame Starting Pitcher Cy Young's 511 Career Wins
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Denton True 'Cy' Young was a very dominant starting pitcher for five teams over the course of his 22-year career. He had such a dominant career that MLB Commissioner Ford Frick decided to award the best pitcher for each season the Cy Young Award in 1956, a year after he died, according to Bob Diskin of ESPN.com.
Young finished his career with 511 wins, including five seasons with at least 30 wins. The starting pitcher with the second-most career wins is Walter Johnson and he had 417.
The active pitchers with the most career wins are Atlanta Braves' starting pitcher 37-year-old Tim Hudson and Yankees' starting pitcher 32-year-old C.C. Sabathia with 205. It would be very tough for either one of them to break Young's record.
Hudson has averaged nearly 14 wins a season, 13.67 to be exact, in his 15-year career. Based on Hudson's average win total, he would need to pitch at least 22 and a half more seasons to break Young's record.
Sabathia has averaged nearly 16 wins a season, 15.77, in his 13-year career. Based on Sabathia's average win total, he would need to pitch at least 19 more seasons to break Young's record.
2. Hall of Fame Hitter Hugh Duffy's .440 Batting Average in a Season
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Hugh Duffy was a great batting average hitter for six teams over the course of his 17-year career. He finished his career with a .326 batting average, which currently ranks as the 37th-best.
However, one statistic stands out for Duffy. That statistic is his .440, rounded up from .43970, batting average in 1894 with the Boston Beaneaters, modern-day Atlanta Braves.
That batting average is the best single season batting average. The player that holds the second-best batting average in a single season is Tip O'Neil, .435 with the St. Louis Browns, modern-day Baltimore Orioles, in 1887.
If a hitter wants to break Duffy's record, they would need to average at least four hits in every 10 plate appearances. The highest batting average this past was Detroit Tigers' third baseman Miguel Cabrera's .348, rounded up from .3477.
Hugh Nicol was not a standout player when he played for three teams over the course of his 10-year career. He had a .235 career batting average and hit only five home runs.
Nicol's only claim to notoriety is his speed. He ended his career with 383 stolen bases, including a 138 in 1887.
The thing that makes that stolen base total very impressive is that Hall of Fame outfielder Rickey Henderson was a dominant base runner and his highest total was 130 in 149 games. Henderson accomplished that in 1982 with the Oakland Athletics.
Yet, Nicol was able to accumulate 138 stolen bases in only 125 games (The first 162-game season was in 1961 in the American League, 1962 for the National League).
Some people will claim that Billy Hamilton owns the record for most stolen bases in a season, however that occurred in the minor leagues. Hamilton was able to steal 155 bases while playing for the Reds' A and AA affiliated teams in the 2012 season.
If a base runner wants to break Nicol's record, they need to get on-base at least 138 times in a season. If they are able to accomplish that, then they would need to average almost a stolen base per game, 162-game season.