It will be the Major League debut for the 23-year-old right-hander, the Mets' first-round pick, seventh overall, in the 2010 First-Year Player Draft. The decision was made following the Mets' loss to the Dodgers on Sunday, hours after the club designated Miguel Batista for assignment, opening up a rotation spot.
New York elected to fill that hole with a prospect MLB.com rated as No. 2 in the Mets organization and No. 30 overall. Harvey will be pitching on normal rest after making his last start for Triple-A Buffalo on Saturday.
The 6-foot-4, 225-pound University of North Carolina product has made 20 starts for Buffalo this season, going 7-5 with a 3.68 ERA. He has given up 97 hits in 110 innings, with 48 walks and 112 strikeouts.
Harvey struggled in that last outing, giving up six earned runs in five innings against Toledo. Mets manager Terry Collins said a potential callup hanging over Harvey's head might have been a contributing factor.
"[Saturday] was one of those situations that [Buffalo manager Wally Backman] thought [Harvey's] mind was in New York, not necessarily in Buffalo," Collins said.
Andrew Simon is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.