elated
undefeated
ascendant
assured of success
cock-a-hoop
coming
conquering
crowing
crowned with success
defeating
dominant
elate
exultant
exulting
flushed
flushed with success
fortunate
gloating
in ascendancy
in high feather
in the ascendant
jubilant
made
on the up-and-up
on top
out in front
overcoming
prevailing
prosperous
rejoicing
succeeding
successful
surefire
triumphal
triumphing
vanquishing
victorious
winning
triumph
angry
confident
defiant
fierce
glorious
joyous
mournful
proud