Answer:

agame

AnswerCrossword Clue
AGAMEBest effort, as it were
AGAME"It's .. of inches"
AGAME"Only .." (NPR show)
AGAMETop performance level
AGAMEOne's best
AGAME"It's only ...!"
AGAME"It's just ...!" ("Winning isn't everything!")
AGAME... two can play
AGAMEAthlete's best effort
AGAMEOne's competitive best
AGAMEOne's best effort, so to speak
AGAMEBest effort, informally
AGAMEBest competitive effort
AGAMEOne's best effort, in sports slang
AGAMEWhat bingo is.
AGAME"That is ... that two can play at."
AGAME"Life is ... . . . "
AGAME"Life is itself but ..."
AGAME"It's only ..."
AGAME"But war's ... . . . ": Cowper
AGAME"This is ... two can play!"
AGAME"War's ...": Cowper
AGAME"Only ..." (NPR program)
AGAMENPR's "Only ..."
AGAMEBest competitive effort, informally
AGAMEBest-effort performance
AGAMEPeak performance, informally
AGAMEVery best performance
AGAME"But war 's ..... which were their subjects wise"
AGAME"But war's ..." (Cowper)
AGAME"It's only ...!" ("Winning isn't everything!")
AGAMEPeak performance
AGAMEYou should always bring it to a competition
AGAMEBest possible athletic performance
AGAMESomething an athlete should bring
AGAMEGood thing for an athlete to bring