Right off the bat
Definition 1 of 1
Pro Tip 1/3Casual Use
Generally used in informal conversations among friends, family, or casual settings. 
I knew right off the bat that this was going to be a relaxed interview.
Pro Tip 2/3First Impression
Often used to describe a quick conclusion or a first impression made by someone or something. 
She seemed trustworthy right off the bat.
Pro Tip 3/3No Hesitation
Emphasizes a sense of immediacy or action without hesitation or second thoughts. 
He started working on the project right off the bat.