It will be the seventh start of the season for Monasterios, who has been shuffled between the back end of the bullpen, where he's had great success, and the back end of the starting rotation, where he's had not so much.
Monasterios is 2-2 with a 5.40 ERA as a starter and 1-0 with a 1.75 ERA as a reliever. In his only appearance against the Mets at Citi Field in April, he pitched two scoreless innings of relief.
The Mets facilitated the Dodgers' acquisition of Monasterios, who was drafted from the Phillies by the Mets in the December Rule 5 Draft and then immediately dealt to the Dodgers for cash in an arranged deal.
Monasterios slides back into the fifth-starter spot, which was filled most recently by James McDonald. McDonald has since replaced Monasterios as a long reliever.
"The only other option on the club right now was J-Mac, and we just think we need his ability in the bullpen," said Torre. "He's durable and can come out of the bullpen and strike somebody out."
Torre also said journeyman Jack Taschner, whose contract was purchased Wednesday, will replace the struggling George Sherrill as the situational left-handed reliever and Sherrill will be used earlier in the game "until we get enough good outings that he's confident what's coming out, and we are, too."