Hot on somebody’s/something’s heels

Pro Tip 1/3

Implies someone is being closely followed, often in a literal chase or pursuit.

As soon as the gates opened, the sprinter was hot on the rival's heels.

Pro Tip 2/3

Suggests a sense of urgency or creating pressure for the person being followed.

With deadlines approaching, her manager was hot on her heels for project updates.

Pro Tip 3/3

Often used in sports or competitions to describe a close margin between competitors.

The young athlete was hot on the champion's heels, threatening to take the lead.