| backup quarterback | 27.85 | -- Backup quarterback. | ||
| backup center | 11.06 | Backup center? | ||
| backup system | 8.82 | A backup system also failed. | ||
| backup catcher | 7.90 | His work title is backup catcher. | ||
| backup goalie | 7.90 | Backup goalie David Kramer made one save. | ||
| backup point | 7.37 | They need a backup point guard. | ||
| backup car | 6.19 | But the backup car is ready. | ||
| backup plan | 5.27 | Is there a backup plan? | ||
| backup role | 4.67 | Falu filled a backup role on that team. | ||
| backup generator | 4.61 | Many companies already have backup generators. | ||
| backup power | 4.48 | The command had to switch to a backup power system. | ||
| backup copy | 3.29 | I always keep a backup copy on disk. | ||
| backup guard | 3.03 | Collins is a backup guard and center. | ||
| backup singer | 2.96 | No band, no backup singers. | ||
| backup tackle | 2.70 | A backup tackle is another need. | ||
| backup job | 2.44 | Rickey is trying out for the backup job. | ||
| backup goaltender | 2.37 | He blamed some losses on a since-demoted backup goaltender. | ||
| backup outfielder | 1.78 | Backup outfielder Brian Simmons will fill in. | ||
| backup player | 1.78 | I was his backup player. | ||
| backup infielder | 1.71 | The backup infielder. |