All ATP Champions in the 2010s

In 12 minutes, try to name all the teams that compete in the MLB, NBA, NFL, and NHL. Can you name them all?

Since the start of the Open Era in 1968, 61 different women have won a Grand Slam singles tennis event. How many can you name?

Name the women who have been ranked as the number one singles player by the WTA.

In 90 seconds, make every country disappear from the map by typing both its first 2 letters and its last 2 letters.