101.   What is also apparently, and perhaps miraculously, unchanged in her is the bear-trap brand of mental toughness that has yet to be copied.

102.   What might separate Sugiyama from other players on the tour is her mental toughness.

103.   What umpires need is keen eyesight, a thick skin, an acceptance of traveling to different cities two or three times a week and mental toughness.

104.   When it came to soaring drives, pinpoint irons, mental toughness, Thomas Galvin had the whole package.

105.   When the team seemed too soft, it acquired the roughhouse power forward Kenyon Martin, whose mental toughness was just what the doctor ordered.

106.   You can call it courage, or you can call it avoidance, or you can call it the mental toughness of the performer.

107.   Yale won the regatta with a gutsy downstream performance, displaying the power, poise and mental toughness that Harvard had been showing in past years.

108.   You need a mental toughness to play in New York.

109.   You should look for mental toughness in a guy.

110.   A marathon is a test of physical endurance and mental toughness.