What sport has thirteen players per team in "league" rules but fifteen in "union" play?

More Questions:

What football championship was first played in 1967?

At what age did tennis player Andre Agassi turn professional?

In which city was the composer Ludwig Van Beethoven born?

In what country is Magyar spoken?

In what city would you find the infamous Alcatraz?

What is the name of the hapless chef in the film "Ratatouille"?

Which character did Evan Handler play on the TV show "Californication"?

Which singer played "Breathless Mahoney" in the 1990 film "Dick Tracy"?

Frank Sinatra died on the exact same night as the series finale of what popular TV show?

What band took on Will Champion as its drummer even though he didn't play drums at the time?

For what movie did director Fritz Lang himself dub the whistling for star Peter Lorre?

Which US president lived in The Beeches?

General George H. Thomas was nicknamed the "Rock of Chickamauga" during what war?

Which US president appears on the far left at Mount Rushmore?

In "Ready Player One" by Ernest Cline, who must the player defeat in order to obtain the copper key?