bad sport
poor sport

It is not good for a player to be considered a poor sport.

Riker could only chalk it up to being a poor sport.

Even chasing down and killing a cruise missile was considered poor sport these days.

Geis laughed at her for being such a poor sport.

Her cry fell on deaf ears, and she was considered a poor sport.

"You, who have had a thousand men, must think me poor sport."

It is poor sport to play with him, for his game will only do me harm.

I don't know if the poor sports and fair-weather friends turned out or not, but I was there.

Really she is a poor sport who has'nt had a hit since the 80's!

He will be seen as just another example of a loud-mouthed, poor sport from New York.