Keep your eye on the ball
Flogging a dead horse
In the driving seat
Ahead of the game
A one-horse race
A major player
On the ropes
To be neck and neck
Move the goalposts
A level playing field
Being in a very bad situation
Being in front of the competition
A situation of fair competition
Being at the same level as the competition
Being in control
Wasting your time on a hopeless situation
Being the only competitor
Staying focused
A change in the rules
An important company or person with a lot of power or influence