To behave in a manner suggesting that one is of normal intelligence, alert, and mentally stable.
To play a game with the availability of a team's full roster of players.
Being in a healthy condition; not deranged; thinking rationally.
Mentally sound; possessing a rational mind; having the mental faculties in such condition as to be able to anticipate and judge the effect of one's actions in an ordinary manner.
Rational; reasonable; sensible.