useless trivia: What Word Means: A Thief?

Questions

Wild Bill Hickok was shot in the back by a stranger during a poker game. The hand he was holding aces & eights is known to poker players as what?

With which sport is Michael Andretti identified?

Word meaning 'center of gravity?

ball & ________?

In 1945, near the end of World War II, an important conference involving Truman, Churchill, & Stalin was held in this Polish city?