That would depend on when one believes the 'modern era' of MLB began. For this answer, we will take Baseball Almanac's year of 1977 as the beginning of the 'modern era'. Since 1977, the most wins in a season by a pitcher is 27 by Bob Welch of the Oakland Athletics in 1990.
Fernando Rodney in 2012. 0.61 ERA
Steve Carlton of the 1980 Philadelphia Phillies with 304.
According to Baseball Almanac, there have been no MLB players from Ecuador through the 2008 season.
The first professional baseball organization was formed in 1876 as a sports business. The people who formed this organization called it the National League. In 1901 another baseball organization was formed and called themselves the American League. Soon after the two leagues recognized each other as legitimate professional baseball organizations and created what we now refer to as major league baseball. They agreed to the same rules of play and also to hold a end of the season championship called the World Series. Much later on changes were made to the American League. As example the American League instituted the designated hitter "rule". In 1977 both leagues agreed to inter league play. Other changes such as the height of the pitcher's mound were agreed to by both leagues.
As of the 2013 season, the last MLB pitcher to win 30+ games in a season was Denny McLain of the Detroit Tigers who went 31-6 in 1968.
John Coleman 48 in 1883
Nolan Ryan with 383 (modern record - in the 1800s teams only had one pitcher and some of those guys had 500+ strikeouts per season)
Cardinals Dizzy Dean in 1934, 30 victories.
Mike Marshall of the Los Angeles Dodgers with 106 in 1974.Through the 2009 season, Marshall is the only pitcher in MLB history to have pitched in 100+ games in a season.
Correia, who joined the Philadelphia Phillies during the 2015 season, is a Portugeuse-American.
162 games in each Major League Baseball Season
If you're talking about the Modern Era (1900 to present) then it would be Roger Maris.
The average is 24,500 pitches for Major league baseball throws in a regular season
Sandy Koufax had 11 shutouts in 1963 for the Dodgers.
Each team plays 162 games in the Major League Baseball regular season. EDIT: Being that there are 30 teams in Major League Baseball (14 in the American League, 16 in the National League), this equates to 2430 scheduled games for a regular season.