Mets option LHP David Peterson after more struggles

The New York Mets sent down left-handed starter David Peterson to Triple-A Syracuse on Tuesday after another woeful performance.

In a corresponding move, the Mets called up LHP Josh Walker, who is set to make his major league debut.

Peterson, 27, is 1-8 with an 8.08 ERA in eight starts this season, including an outing Monday against the Washington Nationals when he gave up six runs in five innings . He has a 1.744 WHIP and leads the National League in earned runs allowed (35).

Walker, 28, is 2-0 with a 0.68 ERA in nine relief appearances at Syracuse. He was selected in the 37th round of the 2017 draft and is in his sixth minor league season.