After an eye-catching debut, Japanese guard Yuki Kawamura says he will keep giving “100 percent” for the Memphis Grizzlies when they meet the Charlotte Hornets in preseason on Thursday. The Paris Olympian, who signed an Exhibit 10 training camp contract in Memphis, looked undaunted in his first NBA action on Monday, scoring five points and dishing three assists in an impressive nine-minute cameo against the Dallas Mavericks. At just 172 centimeters tall, Kawamura has long odds of playing in the NBA but has nevertheless been aggressive on both ends of the floor for the Grizzlies, who have two-w…