Similar to 20-20-20クラブ

30–30 club

3,000 strikeout club

3,000-hit club

300-win club

300 save club

500 home run club

Template:3000 strikeout club

Template:300 win club

Template:300 save club

40–40 club

50–50 season

Template:500 home run club

50 home run club

List of Major League Baseball managerial wins and winning percentage leaders

List of all-time Major League Baseball win–loss records

19th-century National League teams

BEL 20

G20

ISEQ 20

OMX Copenhagen 25

CAC Next 20

The Official Lebanese Top 20

Les XX