In baseball statistics, home runs allowed per nine innings pitched (HR/9IP or HR/9) or home runs allowed per nine innings (denoted by HR/9) is the average number of home runs given up by a pitcher per nine innings pitched. It is determined by multiplying the number of home runs allowed by nine and dividing by the number of innings pitched. [1] Pitchers with high fly ball rates are more likely than pitchers with high ground ball rates to have high HR/9 rates. [1]
The career leaders in HR/9IP through 2018 were Jim Devlin (0.0448), Al Spalding (0.0468), and Reb Russell (0.0488). [2]
There were 87 single-season leaders in HR/9IP through 2018 who pitched a season without giving up a home run. [3] All played before 1927. [3]
The active leaders in HR/9IP through 2018 were Clayton Kershaw (0.6225), Adam Wainwright (0.6755), and Charlie Morton (0.7682). [4]
Baseball statistics include a variety of metrics used to evaluate player and team performance in the sport of baseball.
In baseball statistics, walks plus hits per inning pitched (WHIP) is a sabermetric measurement of the number of baserunners a pitcher has allowed per inning pitched. WHIP is calculated by adding the number of walks and hits allowed and dividing this sum by the number of innings pitched.
In baseball, fielding independent pitching (FIP) is intended to measure a pitcher's effectiveness based only on statistics that do not involve fielders. These include home runs allowed, strikeouts, hit batters, walks, and, more recently, fly ball percentage, ground ball percentage, and line drive percentage. By focusing on these statistics and ignoring what happens once a ball is put in play, which – on most plays – the pitcher has little control over, DIP claims to offer a clearer picture of the pitcher's true ability.
Samuel Edward Thomas McDowell is an American former professional baseball player. He played in Major League Baseball as a starting pitcher from 1961 to 1975, most notably for the Cleveland Indians. A six-time All-Star, McDowell led the American League in strikeouts five times. Tall and powerful, his left-handed fastball was delivered with an unusually calm pitching motion which led to his memorable nickname, "Sudden Sam".
James Rodney Richard was an American professional baseball player. He played his entire career in Major League Baseball as a right-handed starting pitcher for the Houston Astros from 1971 to 1980. Richard led the National League (NL) twice in strikeouts and was named an NL All-Star player in 1980.
Christopher John Carpenter is an American former professional baseball pitcher. He played 15 seasons in Major League Baseball (MLB) for the Toronto Blue Jays and St. Louis Cardinals from 1997 to 2012. A Cy Young Award winner and two-time World Series champion, he was also a three-time All-Star selection. Additionally, he was twice named the Sporting News National League Pitcher of the Year, and received votes for a number of Comeback Player of the Year awards after various surmounting injuries.
In baseball statistics, bases on balls per nine innings pitched or walks per nine innings is the average number of bases on balls, given up by a pitcher per nine innings pitched. It is determined by multiplying the number of bases on balls allowed by nine, and dividing by the number of innings pitched. It is a measure of the bases on balls ability of a pitcher.
In baseball statistics, strikeouts per nine innings pitched is the mean of strikeouts by a pitcher per nine innings pitched. It is determined by multiplying the number of strikeouts by nine, and dividing by the number of innings pitched.
The 1966 Minnesota Twins finished 89–73, second in the American League. 1,259,374 fans attended Twins games, the second highest total in the American League.
George Watt McQuillan was an American professional baseball pitcher. He played in Major League Baseball from 1907 to 1918 for the Philadelphia Phillies, Cincinnati Reds, Pittsburgh Pirates and Cleveland Indians.
The 1984 Toronto Blue Jays season was the franchise's eighth season of Major League Baseball. It resulted in the Blue Jays finishing second in the American League East with a record of 89 wins and 73 losses.
The 1946 Detroit Tigers finished the season with a record of 92–62, twelve games behind the Boston Red Sox. The season was their 46th since they entered the American League in 1901.
The 1904 New York Giants season was the 22nd season in franchise history. They led the National League in both runs scored and fewest runs allowed, on their way to 106 wins and the pennant.
The 1971 Detroit Tigers finished in second place in the American League East with a 91–71 record, 12 games behind the Orioles. They outscored their opponents 701 to 645. They drew 1,591,073 fans to Tiger Stadium, the second highest attendance in the American League.
The 1981 Detroit Tigers season was the team's 81st season as a member of the American League. Games were suspended for 50 days due to the 1981 Major League Baseball strike, causing a split season. The Tigers finished the first half of the season in fourth place in the American League East, and the second half of the season tied for second place. Their overall record was 60 wins and 49 losses, and they outscored their opponents 427 to 404. The Tigers drew 1,149,144 fans to their home games at Tiger Stadium, ranking fifth of the 14 teams in the American League.
The 1974 Detroit Tigers compiled a record of 72–90. They finished in last place in the American League East, 19 games behind the Baltimore Orioles. They were outscored by their opponents 768 to 620.
The Tigers entered the season as the reigning World Series champions. The 1985 Detroit Tigers finished in third place in the American League East with a record of 84–77 (.522), 15 games behind the Blue Jays. The Tigers outscored their opponents 729 to 688. The Tigers drew 2,286,609 fans to Tiger Stadium in 1983, ranking 3rd of the 14 teams in the American League.
In baseball statistics, earned run average (ERA) is the average of earned runs allowed by a pitcher per nine innings pitched. It is determined by dividing the number of earned runs allowed by the number of innings pitched and multiplying by nine. Thus, a lower ERA is better. Runs resulting from passed balls, defensive errors, and runners placed on base at the start of extra innings are recorded as unearned runs and omitted from ERA calculations.
Carlos Ernesto Martínez, nicknamed "Tsunami", is a Dominican professional baseball pitcher for the Olmecas de Tabasco of the Mexican League. He has previously played in Major League Baseball (MLB) for the St. Louis Cardinals. Originally signed by the Red Sox as an international free agent in 2009, MLB voided his contract due to discrepancies over his name and date of birth after the revelation that he was also known as Carlos Matias. However, he was eventually cleared of wrongdoing, as it was found that the inconsistencies arose from poor record keeping.
Framber Valdez is a Dominican professional baseball pitcher for the Houston Astros of Major League Baseball (MLB). Valdez signed with the Astros as an international free agent in 2015, and made his MLB debut in 2018.
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