This idiom or expression like phrase means:

Steady.
In a balanced way.
A condition of equal opportunity.
No particular advantage in any direction.

Also:
On even keel.
On an even keel.

This idiom or expression refers to:

An advantage (over others) at the beginning of a task.

We’re so confident in our team that we’ll give you a five minute head start. Go ahead. We’ll wait five minute before we start.

Asset:
A positive point, an advantage, a good thing to have.

Welcome to our company. Having you on our team is a great asset!!

Liability:
A negative point, a disadvantage, a bad thing to have.

When someone says “He’ll be a liability for us,” they mean:

His presence will hurt us more than it will help.
If we keep him, it won’t be good for our image.

This idiom or expression like phrase means:

An advantage.
Having an advantage.

When someone says “We have the upper hand over them,” they mean something like “We’re in a better position than, or have an advantage over, them.”

A. Do you want to negotiate with Richard?
B. Not really. I have the upper hand here.

This idiom or expression means:

The girl from Florida is ahead.

This idiom or expression has to do with:

Having an advantage.

You should be more careful because she holds an important edge over you.