Greinke to MLB's Arizona for $281m: report

The Arizona Diamondbacks have landed one of the most coveted Major League Baseball (MLB) free agents on the market by agreeing to a contract with star pitcher Zack Greinke, US media reported on Friday.

The blockbuster deal is reported to be for six years and worth $US206.5 million ($A281.35 million), according to ESPN.com and others.

If the deal becomes official, it will be a considerable raise for Greinke, who had opted out of a six-year, $US147 million ($A200 million) contract with the Los Angeles Dodgers after his third season in the City of Angels.

Greinke's contract would average $US34.4 million ($A47 million) per year, surpassing the seven-year, $US217 million ($A296 million) deal that David Price signed this week with the Boston Red Sox.

The 32-year-old Greinke led the MLB with a 1.66 ERA this past season as he posted a 19-3 record and, along with left-hander Clayton Kershaw, helped the Dodgers to their third straight National League West championship.