The Chicago Cubs' rapid ascent has them on pace to match MLB history.

After holding off a late Philadelphia Phillies rally on Monday to win 6-4, the Cubs became the quickest team in 15 years to reach 40 wins, matching the 2001 Seattle Mariners.

Should the Cubs continue their torrid play for the rest of the regular season, Chicago is also in line to match the MLB-record 116 wins set by those same Mariners.

At 40-16, though, the Cubs took four games longer to reach the milestone than the Mariners, who had only lost on 12 occasions before their 40th win.