Tom Glavine joined pitching's most prestigious club with a vintage performance, changing speeds and fooling hitters in the manner that made him one of baseball's best. The stylish left-hander earned his 300th victory Sunday night with nervous family and friends looking on from near the Mets' dugout on the first-base side. Glavine left with a five-run lead after 6 1-3 innings, and New York's bullpen held on for a 8-3 victory over the Cubs.