Glavine's start Friday was pushed back a day because of a rainout.
The Giants are one of two teams to beat him this season (Atlanta, on April 19, is the other) and the only one to score more than three runs off him.
Glavine is 4-1 with a 1.38 ERA in six starts at Shea Stadium, and he's on a 6-0 run with a 2.27 ERA.
For much of his career, Glavine has lived on the outside corner with his fastball and change-up, but has adjusted and is challenging hitters more inside with breaking balls.
REPLAY: Friday's game against the San Francisco Giants was rained out and will be made up Saturday as part of a single admission doubleheader. First pitch at Shea Stadium is scheduled for 1:20 p.m. ET.
BY THE NUMBERS: 91 -- Points 1B Carlos Delgado's average dropped during the month of May.
QUOTE TO NOTE: "I've never seen him blame nobody. We got to help him with runs. Make it easy for him. But it's not gonna be easy, because he's our ace and most of the time he faces the other team's ace." -- Mets INF Jose Valentin, on the lack of support RHP Pedro Martinez is getting. Martinez is winless in his last six starts, with five no-decisions.