2. The Serena Slam

ball game, sports, racquet sport, tennis player, tennis,

Serena has the honor of holding all the Grand Slam titles at the same #time, two times.

In case you have no idea what that means, there are four Grand Slams – the major tournaments held every year: The Australian Open;

The French Open;

The British Open (Wimbledon);

and The US Open.

Winning all four grand slams and the Olympic title in a calendar year gives you the Golden Slam – last achieved by Steffi Graf in 1988.