Zack Greinke and the Arizona Diamondbacks have finalised their $US206.5 million ($A286.53 million), six-year contract, a deal with a $US34.4 million ($A47.73 million) average salary that is the highest in Major League Baseball history.
The Diamondbacks beat out National League West rivals Los Angeles and San Francisco to sign the major league ERA leader and runner-up for the NL Cy Young Award, who helped the Dodgers win their third straight division title this year.
"Zack fills the frontline starter need we've been exploring for a while," Diamondbacks general manager Dave Stewart said in a statement. "Zack will be a tremendous influence on our young starters."
Greinke signed a $US147 million ($A203.97 million), six-year deal with the Dodgers in December 2012 that included an opt-out clause. He will wind up earning $US282.5 million ($A391.98 million) over nine seasons.
His average tops the previous mark of $US31 million ($A43.01 million) set last week when left-hand pitcher David Price agreed to a $US217 million ($A301.10 million), seven-year contract with Boston.
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Out of the playoffs since 2011, the Diamondbacks finished 79-83 last season.
"Thanks to ownership and our leadership team, we are able to build our rotation around Zack and be competitive for years to come," Stewart said.
Greinke, a 32-year-old right-hander, was 19-3 with a 1.66 ERA this year, the lowest by a qualifying pitcher since Greg Maddux's 1.63 for Atlanta in 1995. He had a 45 2-3 innings scoreless streak and teamed with left-hander Clayton Kershaw at the top of the Dodgers' rotation.
Greinke went 51-15 during his three years with the Dodgers.
Arizona will lose its first-round draft pick, No. 13 overall. The Dodgers gain a compensatory pick, likely No. 41.
