MILWAUKEE (WSAU-TSN) Zack Greinke is going back to the American League.

The Milwaukee Brewers traded Greinke to the Los Angeles Angels Friday for shortstop Jean Segura and a pair of Double-A pitchers - Ariel Pena and Johnny Hellweg.

Greinke, who is in the final season of a four-year, $38 million contract, is 9-3 with a 3.44 ERA in 21 starts this season.

The Brewers reportedly made the decision to trade the 2009 AL Cy Young Award winner after an 0-6 road trip. That included three straight 7-6 losses at Philadelphia, when the Phillies rallied to win each game in their final at- bat. Milwaukee entered Friday night's home contest against Washington with a 44-54 record, which was 14 games behind NL Central-leading Cincinnati.

Greinke, 28, was riding a 15-game home winning streak, the longest in Brewers franchise history. He is the fourth starting pitcher in modern major league history (since 1900) to win each of his first 15 home decisions with a team, joining Johnny Allen, LaMarr Hoyt and Kenny Rogers.

Earlier this month, Greinke made three straight starts for the Brewers, becoming the first pitcher to start three consecutive games since Red Faber of the White Sox back in 1917.

A first-round draft selection by Kansas City in 2002, Greinke broke into the majors with the Royals in 2004. He pitched for KC through the 2010 season before being traded to the Brewers. In 259 career games (218 starts), he has compiled an 85-76 record to go with a 3.79 ERA.

Segura, 22, was batting .294 with seven homers and 40 RBI in 94 games for Double-A Arkansas this year. He made his major league debut on Tuesday and went 0-for-3 with a pair of strikeouts against Kansas City.

Pena and Hellweg are both 23-year-old right-handers, who were playing for Arkansas this year. Pena was 6-6 with a 2.99 ERA in 19 starts, while Hellweg was 5-10 with a 3.38 ERA in 21 starts.