go to bat

all dressed up and nowhere to go

Elaborately attired or otherwise fully prepared for an anticipated situation or activity which, nevertheless, fails to occur.

all systems go

Everything is ready.

as you go

While one is doing (something); as one progresses.

bat a thousand

To achieve success at each attempt.

bat an eyelid

To react in any slight way; to respond; to care.

bat five hundred

To be successful half of the time; to have a success rate of 50%.

bat for the other team

To be homosexual.

bat one's eyes

To signal or feign by fluttering one's eyelids, as romantic interest.